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Ver. 19.2
March 25th, 2024

350.0000 Family Brassicaceae Burnett; Outlines Bot.: 854, 1093, 1123 (1835), nom. cons.
339 genera, ca. 4050 spp. Updated phylogeny see Hendriks et al. (2022) and German et al. (2023)
Species listed in database: 4083; hybrids: 100
= Arabidaceae Döll; Rhein. Fl.: 573 (1843)
= Cruciferae Juss.; Gen. Pl. 237 (1789), nom. cons.
= Drabaceae Martinov; Tekhno-Bot. Slovar: 215 (1820)
= Erysimaceae Martinov; Tekhno-Bot. Slovar: 238 (1820)
= Isatidaceae Döll; Fl. Baden 3: 1310 (1861)
= Raphanaceae Horan.; Char. Ess. Fam.: 169 (1847)
= Schizopetalaceae A.Juss.; V. V. D. d´Orbigny, Dict. Univ. Hist. Nat. 11: 419 (1848)
= Sisymbriaceae Martinov; Tekhno-Bot. Slovar: 583 (1820)
= Stanleyaceae Nutt.; J. Acad. Nat. Sci. Philadelphia 7: 85 (1834)
= Thlaspiaceae Martinov; Tekhno-Bot. Slovar: 633 (1820)
350.4702 Genus Boechera Á.Löve & D.Löve; Bot. Notiser, 128(4): 513 (1975 publ. 1976), nom. cons.
Distribution: North America, N-Mexico, Russian Far East
Species listed in database: 103; hybrids: 1
species :
Boechera acutina (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 236 (2007)
Distribution: USA (California, Idaho, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis acutina Greene; Leaflets Bot. Obs. 2: 82 (1910)
= Arabis confinis var. interposita (Greene) S.L.Welsh & Reveal; Great Basin Nat. 37(3): 293 (1977 publ. 1978)
= Arabis divaricarpa var. interposita (Greene) Rollins; Rhodora 43: 378 (1941)
= Arabis drummondii var. interposita (Greene) Rollins; Res. Stud. State Coll. Wash. 4: 45 (1936)
= Arabis interposita Greene; Leaflets Bot. Obs. 2: 78 (1910)
species :
Boechera arcuata (Nutt.) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 64 (2006)
Name: Elegant rockcress
Distribution: USA (W-California, S-California)
76 USA
Synonyms: hidden
= Arabis arcuata (Nutt.) A.Gray; Proc. Am. Acad. 6: 187 (1864)
= Arabis holboellii var. arcuata (Nutt. ex Torr. & A.Gray) Jeps.; (1925)
= Arabis maxima Greene; Pittonia 4: 192 (1900)
= Arabis sparsiflora var. arcuata (Nutt. ex Torr. & A.Gray) Rollins; Res. Stud. State Coll. Washington 4: 26 (1936)
= Erysimum arcuatum (Nutt. ex Torr. & A.Gray) Kuntze; Revis. Gen. Pl. 2: 933 (1891)
= Streptanthus arcuatus Nutt. ex Torr. & A.Gray; Fl. N. Am. 1: 77 (1838)
species :
Boechera atrorubens (Suksd. ex Greene) Windham & Al-Shehbaz, Harvard Pap.Bot.11: 64 (2006)
Distribution: USA (Oregon, Washington State)
73 USA
Synonyms: hidden
= Arabis atriflora Suksd.; Deutsche Bot. Monatsschr. 16(Heft 11): 211 (1898)
= Arabis atrorubens Suksd. ex Greene; Erythea 1: 223 (1893)
= Arabis sparsiflora var. atrorubens (Suksd. ex Greene) Rollins; Res. Stud. State Coll. Wash. 4: 26 (1936)
species :
Boechera austromontana Windham & Allphin; J. Bot. Res. Inst. Texas 16(1): 13, figs. 1-2 (2022)
Distribution: USA (Colorado)
73 USA
species :
Boechera bodiensis (Rollins) Al-Shehbaz; Novon 13(4): 383 (2003)
Name: Bodie Hills rockcress
Distribution: USA (E-California: Mono Co., W-Nevada: Lyon Co., Mineral Co.)
73 USA 76 USA
Synonyms: hidden
= Arabis bodiensis Rollins; Contr. Gray Herb., 212: 113 (1982)
species :
Boechera botulifructa D.P.Morin; PhytoKeys 98: 30 (2018)
Distribution: USA (California, Oregon)
73 USA 76 USA
species :
Boechera breweri (S.Watson) Al-Shehbaz; Novon 13(4): 384 (2003)
subspecies :
subsp. breweri
Name: Brewer´s rockcress
Distribution: USA (California, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis breweri S.Watson; Proc. Am. Acad. 11: 123 (1876)
= Arabis breweri var. figularis Jeps.; Fl. Calif. [Jeps.] 2: 65 (1936)
= Arabis epilobioides Greene; Repert. Spec. Nov. Regni Veg. 5: 242 (1908)
subspecies :
subsp. shastaensis Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 65 (2006)
Distribution: USA (California, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis austiniae Greene; Repert. Spec. Nov. Regni Veg. 5: 242 (1908)
= Arabis bodiensis var. austiniae (Greene) Rollins; Rhodora 43: 409 (1941)
= Arabis bodiensis var. pecunaria Rollins; Rhodora 43: 409 (1941)
= Arabis rostellata Greene; Leafl. Bot. Observ. Crit. 2(2): 71 (1910)
species :
Boechera calcarea Dudkin; Novon 22(4): 411 (2013)
Distribution: Russian Far East (Primorye)
31 RFE
species :
Boechera calderi (G.A.Mulligan) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 259 (2007)
Name: Calder´s rockcress
Distribution: Canada (Alberta, British Columbia, N. W. T., Yukon, California, Idaho, Montana, Oregon, Washington State, Wyoming)
70 CDN 71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis calderi G.A.Mulligan; Rhodora, 97(890): 144 (1995 publ. 1996)
species :
Boechera californica (Rollins) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 260 (2007)
Name: California rockcress
Distribution: USA (California: Los Angeles, Riverside, San Bernardino, San Diego Co.); Mexico (Baja California Norte)
76 USA 79 MEX
Synonyms: hidden
= Arabis sparsiflora var. californica Rollins; Rhodora 43: 402 (1941)
species :
Boechera cascadensis Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 260 (2007), nom. nov.
Name: Thompson´s rockcress
Distribution: USA (Oregon: Baker Co., Washington: Kittitas Co.)
73 USA
Synonyms: hidden
= Arabis microphylla var. thompsonii Rollins; Rhodora 43: 429 (1941), not Boechera thompsonii (S. L. Welsh) N. H. Holmgren 2005
species :
Boechera cobrensis (M.E.Jones) Dorn; Vasc. Pl. Wyoming ed. 3. 375 (2001)
Name: Sagebrush rockcress
Distribution: USA (California, Idaho, Nevada, Oregon, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Arabis canescens Nutt.; Torr. & A. Gray, Fl. N. Am. 1: 83 (1838) (non Brocchi 1823)
= Arabis cobrensis M.E.Jones; Contr. Western Bot. 12: I (1908)
= Arabis crypta A.Nelson & J.F.Macbr.; Bot. Gaz. 56: 473 (1913)
species :
Boechera collinsii (Fernald) Á.Löve & D.Löve; Taxon 31(1): 125 (1982)
Name: Collins´ rockcress
Distribution: Canada (Alberta, Manitoba, Quebec, Saskatchewan, Idaho, Minnesota, Montana, Nebraska, North Dakota, South Dakota, Wyoming)
71 CDN 72 CDN 73 USA 74 USA 75 USA
Synonyms: hidden
= Arabis collinsii Fernald; Rhodora 7: 32 (1905)
= Arabis holboellii var. collinsii (Fernald) Rollins; Rhodora 43: 445 (1941)
= Arabis retrofracta var. collinsii (Fernald) B.Boivin; Canad. Field-Naturalist 65: 17 (1951)
= Boechera holboellii var. collinsii (Fernald) Dorn; Vasc. Pl. Wyoming, ed. 3: 375 (2001)
species :
Boechera consanguinea (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 261 (2007)
Distribution: USA (Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Synonyms: hidden
= Arabis consanguinea Greene; Pittonia 4: 190 (1900)
= Arabis holboellii var. consanguinea (Greene) G.A.Mulligan; Rhodora, 97(890): 155 (1995)
species :
Boechera constancei (Rollins) Al-Shehbaz; Novon 13(4): 384 (2003)
Name: Constance´s rockcress
Distribution: USA (California: Plumas Co.)
76 USA
Synonyms: hidden
= Arabis constancei Rollins; Contr. Gray Herb., 201: 5 (1971)
= Arabis suffrutescens var. perstylosa Rollins; Rhodora 43: 471 (1941)
species :
Boechera covillei (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 237 (2007)
Distribution: USA (California, Nevada, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis covillei Greene; Repert. Spec. Nov. Regni Veg. 5: 243 (1908)
= Arabis leibergii Greene; Repert. Spec. Nov. Regni Veg. 5: 243 (1908)
species :
Boechera crandallii (Rob.) W.A.Weber; Phytologia 51(6): 369 (1982)
subspecies :
subsp. crandallii
Name: Crandall´s rockcress
Distribution: USA (Colorado: Gunnison Basin)
73 USA
Synonyms: hidden
= Arabis crandallii B.L.Rob.; Bot. Gaz. 28: 135 (1899)
= Arabis stenoloba Greene; Pl. Baker. [Greene] 3: 8 (1901)
subspecies :
subsp. kelseyana (Windham & Allphin) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Distribution: USA (Arizona, New Mexico)
76 USA 77 USA
Synonyms: hidden
= Boechera kelseyana Windham & Allphin; Syst. Bot. 40(4): 1041 (2015)
subspecies :
subsp. thompsonii (S.L.Welsh) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Distribution: USA
Synonyms: hidden
= Arabis thompsonii S.L.Welsh; Utah Fl., ed. 3. 260 ) (2003)
= Boechera thompsonii (S.L.Welsh) N.H.Holmgren; Intermount. Fl. (Cronquist et al.) 2(B): 374 (2005)
subspecies :
subsp. villosa (Windham & Al-Shehbaz) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Distribution: USA (New Mexico)
77 USA
Synonyms: hidden
= Boechera villosa Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 86 (2006)
species :
Boechera cusickii (S.Watson) Al-Shehbaz; Novon 13(4): 384 (2003)
Name: Cusick´s rockcress
Distribution: USA (Idaho, N-Nevada, Washington State, West Virginia Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis cusickii S.Watson; Proc. Am. Acad. 17: 363 (1881 publ. 1882)
species :
Boechera davidsonii (Greene) N.H.Holmgren; Cronquist et al., Intermount. Fl. 2(B): 368 (2005)
Name: Davidson´s rockcress
Distribution: USA (California, Nevada, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis bruceae M.E.Jones; Contr. W. Bot. 14: 37 (1912)
= Arabis cognata Jeps.; Man. Fl. Pl. Calif. 429 (1925)
= Arabis davidsonii Greene; Leaflets Bot. Obs. 2: 159 (1911)
= Arabis davidsonii var. parva Rollins; Harvard Pap. Bot. 4: 43 (1993)
= Arabis lyallii var. davidsonii (Greene) Smiley; Univ. Calif. Publ. Bot. 9: 205 (1921)
species :
Boechera depauperata (A.Nelson & P.B.Kenn.) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 262 (2007)
Distribution: USA (California: Fresno, Mono, Tulare Co., Nevada: Washoe Co.)
76 USA
Synonyms: hidden
= Arabis depauperata Nelson & P.B.Kenn.; Proc. Biol. Soc. Washington 19: 36 (1906)
= Arabis lemmonii var. depauperata (A.Nelson & P.B.Kenn.) Rollins; Madrono 3: 360 (1936)
species :
Boechera dispar (M.E.Jones) Al-Shehbaz; Novon 13(4): 384 (2003)
Name: Pinyon rockcress
Distribution: USA (California: Inyo, Mono, San Bernardino Co., Nevada: Nye Co.)
76 USA
Synonyms: hidden
= Arabis dispar M.E.Jones; Contr. Western Bot. 8: 41 (1898)
= Arabis juniperina M.E.Jones; Contr. W. Bot. 15: 68 (1929)
= Arabis nardina Greene; Leafl. Bot. Observ. Crit. 2: 70 (1910)
= Arabis salubris M.E.Jones; Contr. W. Bot. 14: 37 (1912)
species :
Boechera divaricarpa (A.Nelson) Á.Löve & D.Löve; Bot. Notiser, 128(4): 513 (1975 publ. 1976)
Name: Spreadingpod rockcress
Distribution: USA (California, Idaho, Montana, Nevada, Utah, Washington State, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Arabis brevisiliqua Rydb.; Bull. Torrey Bot. Club 39: 326 (1912)
= Arabis divaricarpa A.Nelson; Bot. Gaz. 30: 193 (1900)
= Arabis oblanceolata Rydb.; Bull. Torrey Bot. Club 31: 557 (1904)
= Arabis stokesiae Rydb.; Fl. Rocky Mts. 361 (1917)
species :
Boechera drepanoloba (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 263 (2007)
Name: Soldier rockcress
Distribution: Alaska; Canada (Alberta); USA (Colorado, Idaho, Montana, Oregon, Utah, Washington State, Wyoming)
70 ASK 71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis drepanoloba Greene; Pittonia 3: 306 (1898)
= Arabis drummondii var. oreophila (Rydb.) M.Hopkins; Rhodora 39: 141 (1937)
= Arabis lemmonii var. drepanoloba (Greene) Rollins; Rhodora 43: 384 (1941)
= Arabis oreophila Rydb.; Bull. Torr. Bot. Club 34: 437 (1907)
= Boechera lemmonii var. drepanoloba (Greene) Dorn; Vasc. Pl. Wyoming, ed. 3: 376 (2001)
species :
Boechera drummondii (A.Gray) Á.Löve & D.Löve; Bot. Notiser, 128(4): 513 (1975 publ. 1976)
Name: Drummond´s rockcress
Distribution: Alaska; Canada (Alberta, British Columbia, N. W. T., Quebec, Saskatchewan, Yukon); USA (Arizona, California, Colorado, Idaho, Iowa, Maine, Massachusetts, Michigan, Minnesota, Montana, Nevada, New Hampshire, New Mexico, North Dakota, Ohio, Oregon, Rhode Island, Utah, Vermont, Washington State, West Virginia Wisconsin, Wyoming)
70 ASK CDN 71 CDN 72 CDN 73 USA 74 USA 75 USA 76 USA 77 USA
Synonyms: hidden
= Arabis albertina Greene; Pittonia 4: 196 (1900)
= Arabis connexa Greene; Pittonia 4: 197 (1900)
= Arabis drummondii A.Gray; Proc. Am. Acad. 6: 187 (1866)
= Arabis drummondii var. connexa (Greene) Fernald; Rhodora 5: 231 (1903)
= Arabis drummondii var. oxyphylla (Greene) M.Hopkins; Rhodora 39: 143 (1937)
= Arabis laevigata Hook.; Fl. Bor.-Amer. 1: 43 (1829), nom. illeg.
= Arabis oxyphylla Greene; Pittonia 4: 196 (1900)
= Boechera angustifolia (Nutt.) Dorn; Vasc. Pl. Wyoming, ed. 3. 375 (2001)
= Boechera stricta (Graham) Al-Shehbaz; Novon 13(4): 389 (2003)
= Erysimum drummondii (A.Gray) Kuntze; Revis. Gen. Pl. 2: 933 (1891)
= Erysimum spathulatum (Nutt. ex Torr. & A.Gray) Kuntze; Revis. Gen. Pl. 2: 934 (1891)
= Streptanthus angustifolius A.Gray; Proc. Acad. Nat. Sci. Philadelphia 1863: 57 (1864), nom. illeg.
= Streptanthus angustifolius Nutt.; Fl. N. Amer. (Torr. & A. Gray) 1(1): 76 (1838) (non Arabis angustifolia Lam. 1883)
= Turritis drummondii (A.Gray) Lunell; Am. Midl. Nat. 5: 236 (1918)
= Turritis spathulata Nutt.; Torr. & A. Gray, Fl. N. Amer. 1: 78 (1838)
= Turritis stricta Graham; Edinb. N. Phil. J. (1829) 350 (non Arabis stricta Huds. 1777)
= Turritis stricta var. brachycarpa Alph.Wood; Amer. Bot. Fl.: 36 (1870)
species :
Boechera duchesnensis (Rollins) Windham, Al-Shehbaz & Allphin, Harvard Pap.Bot.12: 239 (2007)
Name: Duchesne rockcress
Distribution: USA (Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Synonyms: hidden
= Arabis pulchra var. duchesnensis Rollins; Syst. Bot. 6(1): 59 (1981)
= Boechera pulchra var. duchesnensis (Rollins) Dorn; Brittonia 55: 3 (2003)
species :
Boechera duriuscula (Greene) D.P.Morin; PhytoKeys 98: 36 (2018)
Distribution: USA (California)
76 USA
Synonyms: hidden
= Arabis duriuscula Greene; Pittonia 4: 191 (1900)
species :
Boechera elkoensis Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 263 (2007)
Distribution: USA (California, Nevada)
76 USA
species :
Boechera evadens Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 66 (2006)
Distribution: USA (California: holotype only, Tulare Co.)
76 USA
species :
Boechera falcata (Turcz.) Al-Shehbaz; Novon 15(4): 520 (2005)
Distribution: Siberia (Yakutia); Russian Far East (Magadan)
30 SIB 31 RFE
Synonyms: hidden
= Arabis falcata (Turcz.) Berkut.; Bot. Zhurn. (Moscow & Leningrad) 61: 1597 (1976), nom. illeg.
= Arabis turczaninowii Ledeb.; Fl. Ross. (Ledeb.) 1(1): 123 (1841)
= Erysimum falcatum (Turcz.) Kuntze; Revis. Gen. Pl. 2: 933 (1891)
= Turritis falcata Turcz.; Bull. Soc. Imp. Naturalistes Moscou 14: 63 (1840)
species :
Boechera falcatoria (Rollins) Dorn; Brittonia 55: 3 (2003)
Name: Grouse Creek rockcress
Distribution: USA (Utah)
76 USA
Synonyms: hidden
= Arabis falcatoria Rollins; Contr. Gray Herb., 212: 106 (1982)
species :
Boechera falcifructa (Rollins) Al-Shehbaz; Novon 13(4): 385 (2003)
Name: Elko rockcress
Distribution: USA (Nevada: Elko Co., Lander Co.)
76 USA
Synonyms: hidden
= Arabis falcifructa Rollins; Contr. Gray Herb., 212: 112 (1982)
species :
Boechera fecunda (Rollins) Dorn; Brittonia 55: 3 (2003)
Name: Mt. Sapphire rockcress
Distribution: USA (SW-Montana: Ravalli Co., Silver Bow Co.)
73 USA
Synonyms: hidden
= Arabis fecunda Rollins; Contr. Gray Herb., 214: 1 (1984)
species :
Boechera fernaldiana (Rollins) W.A.Weber; Phytologia 51(6): 370 (1982)
Name: Park rockcress
Distribution: USA (Nevada: Elko, Humb., Lander, Nye Co.)
76 USA
Synonyms: hidden
= Arabis canescens var. stylosa S.Watson; Bot. California [W. H. Brewer] 2: 431 (1880)
= Arabis fernaldiana Rollins; Rhodora 43: 430 (1941)
= Arabis fernaldiana var. stylosa (S.Watson) Rollins; Rhodora 43: 431 (1941)
variant :
var. vivariensis (S.L.Welsh) Tiehm; J. Bot. Res. Inst. Texas 17(1): 23 (2023)
Distribution: USA (Colorado: Moffat Co., Utah: Uintah Co.)
73 USA 76 USA
Synonyms: hidden
= Arabis vivariensis S.L.Welsh; Great Basin Nat. 46(2): 263 (1986)
= Boechera fernaldiana subsp. vivariensis (S.L.Welsh) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 67 (2006)
= Boechera vivariensis (S.L.Welsh) W.A.Weber; Phytologia 67: 425 (1989)
species :
Boechera formosa (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 68 (2006)
Distribution: USA (Arizona, Colorado, New Mexico, Utah, Wyoming)
73 USA 76 USA 77 USA
Synonyms: hidden
= Arabis formosa Greene; Pittonia 4: 198 (1900)
= Arabis pulchra var. pallens M.E.Jones; Contr. W. Bot. 8: 42 (1898)
= Boechera pulchra subsp. pallens (M.E.Jones) W.A.Weber; Phytologia 51: 371 (1982)
= Boechera pulchra var. pallens (M.E.Jones) Dorn; Vasc. Pl. Wyoming, ed. 3: 376 (2001)
species :
Boechera fructicosa (A.Nelson) Al-Shehbaz; Novon 13: 385 (2003) (as fruticosa)
Name: Fruit rockcress
Distribution: USA (Wyoming: type collection only, Park Co.)
73 USA
Synonyms: hidden
= Arabis fructicosa A.Nelson; Coult. Bot. Gaz. 30: 190 (1900)
species :
Boechera glareosa Dorn; Brittonia. 55: 1, fig. 1 (2003)
Distribution: USA (Colorado: Moffat Co., Utah: Summit Co., Uintah Co.)
73 USA 76 USA
species :
Boechera glaucovalvula (M.E.Jones) Al-Shehbaz; Novon 13(4): 385 (2003)
Name: Bluepod rockcress
Distribution: USA (California: Inyo, Mono, Riverside, San Bernardino Co., Nevada: Clark, Nye Co.)
76 USA
Synonyms: hidden
= Arabis glaucovalvula M.E.Jones; Contr. Western Bot. 8: 40 (1898)
species :
Boechera goodrichii (S.L.Welsh) N.H.Holmgren; Cronquist et al., Intermount. Fl. 2(B): 364 (2005)
Distribution: USA (Nevada, Utah)
76 USA
Synonyms: hidden
= Arabis goodrichii S.L.Welsh; S. L. Welsh et al., Utah Fl. ed. 3, 255 (2003)
species :
Boechera gracilenta (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 240 (2007)
Name: Selby´s rockcress
Distribution: USA (Arizona, Colorado, New Mexico, Utah)
73 USA 76 USA 77 USA
Synonyms: hidden
= Arabis gracilenta Greene; Pittonia 4: 194 (1900)
= Arabis perennans var. thorneae S.L.Welsh; Utah Fl., ed. 3. 259 (2003)
= Arabis selbyi Rydb.; Bull. Torr. Bot. Club, 557 (1904)
= Boechera selbyi (Rydb.) W.A.Weber; Phytologia 51(6): 371 (1982)
= Boechera selbyi var. thorneae (S.L.Welsh) N.H.Holmgren; Brittonia 56(3): 246 (2004)
species :
Boechera grahamii (Lehm.) Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 241 (2007)
Name: Boivin´s rockcress
Distribution: Alaska; Canada (Alberta, British Columbia, Manitoba, N. W. T., Ontario, Quebec, Saskatchewan, Yukon); USA (Colorado, Michigan, Minnesota, Montana, New York, North Dakota, South Dakota, Vermont, Washington State, West Virginia Wisconsin, Wyoming)
70 ASK CDN 71 CDN 72 CDN 73 USA 74 USA 75 USA
Synonyms: hidden
= Arabis boivinii G.A.Mulligan; Rhodos, 97(890): 157 (1995 publ. 1996)
= Arabis bourgovii Rydb.; Mem. N. York Bot. Gard. 1: 186 (1900)
= Arabis brachycarpa (Torr. & A.Gray) Britton; Mem. Torr. Bot. Club 5: (1894) 174 (non Rupr.)
= Arabis confinis S.Watson; Proc. Am. Acad. 22: 466 (1887)
= Arabis confinis var. brachycarpa (Torr. & A.Gray) S.Watson & J.M.Coult.; A. Gray, Syn. Fl. N. Amer. 1(1): 163 (1895)
= Arabis dacotica Greene; Leaflets Bot. Obs. 2: 80 (1910)
= Arabis divaricarpa var. dacotica (Greene) B.Boivin; Amer. Midl. Naturalist 54: 510 (1955)
= Arabis divaricarpa var. hemicylindrica B.Boivin; Amer. Midl. Naturalist 54: 510 (1955)
= Arabis divaricarpa var. stenocarpa M.Hopkins; Rhodora 39: 133 (1937)
= Arabis drummondii var. brachycarpa (Torr. & A.Gray) A.Gray; (1867)
= Arabis holboelii var. brachycarpa (Torr. & A.Gray) S.L.Welsh; Utah Fl., ed. 3. 256 (2003)
= Arabis holboellii var. patula S.Watson; A. Gray, Syn. Fl. N. Amer. 1(1): 164 (1895)
= Arabis patula Torr.; Emory, Rep. U.S. Mex. Bound. 2(1): 32 (1859), nom. illeg.
= Arabis patula var. stenocarpa (M.Hopkins) Farw.; Pap. Michigan Acad. Sci. 26(1): 14 (1941)
= Boechera brachycarpa (Torr. & A.Gray) Dorn; Vasc. Pl. Wyoming, ed. 3. 375 (2001)
= Turritis brachycarpa Torr. & A.Gray; Fl. N. Am. 1: 79 (1838) (non Rupr.)
= Turritis drummondii var. brachycarpa (Torr. & A.Gray) Lunell; Amer. Midl. Naturalist 5: 236 (1919)
= Turritis grahamii Lehm.; Index Seminum (Hamburg) 1831: 7 (1831), not Ehrhart 1792
= Turritis patula Graham; Edinburgh New Philos. J. 1829(July-Oct.): 350 (1829), nom. illeg.
species :
Boechera gunnisoniana (Rollins) W.A.Weber; Phytologia 51: 370 (1982)
Name: Gunnison´s rockcress
Distribution: USA (Colorado)
73 USA
Synonyms: hidden
= Arabis gunnisoniana Rollins; Rhodora 43: 434 (1941)
species :
Boechera harrisonii (S.L.Welsh) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 266 (2007)
Distribution: USA (Utah: Utah Co., Wasatch Co.)
76 USA
Synonyms: hidden
= Arabis harrisonii S.L.Welsh; S. L. Welsh et al., Utah Fl. ed. 3, 256 (2003)
= Boechera microphylla var. harrisonii (S.L.Welsh) N.H.Holmgren; Brittonia 56(3): 246 (2004)
species :
Boechera hastatula (Greene) Al-Shehbaz; Novon 13(4): 386 (2003)
Distribution: USA (Oregon: Baker Co., Wallowa Co.)
73 USA
Synonyms: hidden
= Arabis hastatula Greene; Leaflets Bot. Obs. 2: 79 (1910)
species :
Boechera hoffmannii (Munz) Al-Shehbaz; Novon 13(4): 386 (2003)
Name: Hoffmann´s rockcress
Distribution: USA (California: Santa Cruz Isl.)
76 USA
Synonyms: hidden
= Arabis hoffmannii (Munz) Rollins; Madrono 3: 360 (1936)
= Arabis maxima var. hoffmannii Munz; Bull. S. California Acad. Sci. 31: 63 (1932)
species :
Boechera holboellii (Hornem.) Á.Löve & D.Löve; Bot. Not. 128: 513 (1976)
Name: Holboell´s rockcress
Distribution: Greenland
70 GNL
Synonyms: hidden
= Arabis declinata Schrad.; Linnaea 8(Litt.): 22 (1833)
= Arabis heteromalla Schrad.; Linnaea 8(Litt.): 22 (1833)
= Arabis holboelliana Trevir.; Flora 16: 124 (1833)
= Arabis holboellii f. glabra Böcher; Svensk Bot. Tidskr. 48: 38 (1954)
= Arabis holboellii Hornem.; Oeder, Fl. Dan.: t. 1879 (1827)
= Arabis holboellii var. angustifolia Fenzl; Index Seminum (WU, Vindobonensis) 1851: 3 (1852)
= Arabis holboellii var. latifolia Fenzl; Index Seminum (WU, Vindobonensis) 1851: 1 (1852)
= Arabis holboellii var. tenuis Böcher; Svensk Bot. Tidskr. 48: 38 (1954)
= Arabis lilacina Schrad.; Index Seminum (GOET) 1832: 42 (1832)
= Boechera tenuis (Böcher) Á.Löve & D.Löve; Bot. Not. 128: 513 (1975 publ. 1976)
= Erysimum holboellii (Hornem.) Kuntze; Revis. Gen. Pl. 2: 933 (1891)
= Sisymbrium reflexum Kellogg; Proc. Calif. Acad. Sci. 2: 101 (1863), nom. illeg.
= Streptanthus virgatus Nutt.; Torr. & A. Gray, Fl. N. Amer. 1: 76 (1838)
= Turritis retrofracta Hook.; Fl. Bor.-Amer. 1: 41 (1829)
species :
Boechera horizontalis (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 266 (2007)
Name: Horizontal woody rockcress
Distribution: USA (Oregon: Crater Lake)
73 USA
Synonyms: hidden
= Arabis horizontalis Greene; Leaflets Bot. Obs. 2: 74 (1910)
= Arabis suffrutescens var. horizontalis (Greene) Rollins; Res. Stud. State Coll. Wash. 4: 50 (1936)
species :
Boechera howellii (S.Watson) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 69 (2006)
Name: Howell´s pioneer rockcress
Distribution: USA (California, Nevada, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis conferta Greene; Repert. Spec. Nov. Regni Veg. 5: 243 (1908)
= Arabis howellii S.Watson; Proc. Am. Acad. 25: 124 (1890)
= Arabis inamoena var. acutata Jeps.; Fl. Calif. [Jeps.] 2: 72 (1936)
= Arabis platyloba Greene; Pittonia 4: 198 (1900)
= Arabis platysperma var. howellii (S.Watson) Jeps.; Man. Fl. Pl. Calif. 432 (1925)
= Arabis platysperma var. imparata Jeps.; Fl. Calif. [Jeps.] 2: 72 (1936)
species :
Boechera inyoensis (Rollins) Al-Shehbaz; Novon 13(4): 386 (2003)
Name: Inyo rockcress
Distribution: USA (California, Nevada, Utah)
76 USA
Synonyms: hidden
= Arabis holboellii var. derensis S.L.Welsh; Utah Fl., ed. 3. 257 (2003)
= Arabis inyoensis Rollins; Rhodora 43: 457 (1941)
= Boechera selbyi var. inyoensis (Rollins) N.H.Holmgren; Brittonia 56(3): 246 (2004)
species :
Boechera johnstonii (Munz) Al-Shehbaz; Novon 13(4): 386 (2003)
Name: Johnston´s rockcress
Distribution: USA (California: San Diego Co., Riverside Co.)
76 USA
Synonyms: hidden
= Arabis hirshbergiae S.Boyd; Aliso 17(2): 203 (1998)
= Arabis johnstonii Munz; Bull. S. Calif. Acad. Sci. 31: 63 (1932)
= Boechera hirshbergiae (S.Boyd) Al-Shehbaz; Novon 13(4): 386 (2003)
species :
Boechera koehleri (Howell) Al-Shehbaz; Novon 13(4): 386 (2003)
Name: Koehler´s rockcress
Distribution: USA (California, S-Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis arbuscula Greene; Leafl. Bot. Observ. Crit. 2: 77 (1910)
= Arabis koehleri Howell; Fl. N. W. Amer. 44 (1897)
= Arabis koehleri var. stipitata Rollins; Rhodora 43: 426 (1941)
species :
Boechera languida (Rollins) Windham & Al-Shehbaz, Harvard Pap.Bot.12: 244 (2007)
Distribution: USA (Wyoming)
73 USA
Synonyms: hidden
= Arabis demissa var. languida Rollins; Rhodora 43: 388 (1941)
= Boechera demissa var. languida (Rollins) Dorn; Vasc. Pl. Wyoming, ed. 3. 375 (2001)
species :
Boechera lasiocarpa (Rollins) Dorn; Brittonia 55: 3 (2003)
Name: Wasatch rockcress
Distribution: USA (Utah: Bear River Mts., northern Wasatch Range)
76 USA
Synonyms: hidden
= Arabis lasiocarpa Rollins; Syst. Bot. 6(1): 58 (1981)
species :
Boechera lemmonii (S.Watson) W.A.Weber; Phytologia 51(6): 370 (1982)
Name: Lemmon´s rockcress
Distribution: Alaska; Canada (Alberta, British Columbia, Yukon); USA (California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington State, Wyoming)
70 ASK CDN 71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis bracteolata Greene; Leafl. Bot. Observ. Crit. 2: 73 (1910)
= Arabis canescens var. latifolia S.Watson; Botany [Fortieth Parallel] 17 (1871)
= Arabis codyi G.A.Mulligan; Rhodora, 97(890): 151 (1995 publ. 1996)
= Arabis egglestonii Rydb.; Fl. Rocky Mts. 361 (1917)
= Arabis kennedyi Greene; Leafl. Bot. Observ. Crit. 2: 71 (1910)
= Arabis latifolia (S.Watson) Piper; Contr. U. S. Natl. Herb. 11: 295 (1906) (nom. illeg.)
= Arabis lemmonii S.Watson; Proc. Am. Acad. 22: 467 (1887), et Contr. U. S. Nat. Herb. 4: 61 (1893)
= Arabis oreocallis Greene; Leafl. Bot. Observ. Crit. 2: 73 (1910)
= Arabis polyclada Greene; Leafl. Bot. Observ. Crit. 2: 75 (1910)
= Arabis semisepulta Greene; Leafl. Bot. Observ. Crit. 2: 74 (1910)
species :
Boechera lignifera (A.Nelson) W.A.Weber; Phytologia 51(6): 370 (1982)
Name: Desert rockcress
Distribution: USA (Arizona, Colorado, Idaho, New Mexico, Utah, Wyoming)
73 USA 76 USA 77 USA
Synonyms: hidden
= Arabis lignifera Nelson; Bull. Torr. Bot. Club, 123 (1899)
species :
Boechera lincolnensis Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 71 (2006)
Name: Muncy rockcress
Distribution: USA (California, Nevada, Utah)
76 USA
Synonyms: hidden
= Arabis pulchra var. munciensis M.E.Jones; Contr. W. Bot. 14: 42 (1912)
= Boechera pulchra var. munciensis (M.E.Jones) Dorn; Brittonia 55: 3 (2003)
species :
Boechera lyallii (S.Watson) Dorn; Vasc. Pl. Wyoming ed. 3: 376 (2001)
Name: Lyall´s rockcress
Distribution: Canada (British Columbia, Yukon); USA (California, Idaho, Montana, Nevada, Oregon, Utah, Washington)
70 CDN 71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis armerifolia Greene; Leafl. Bot. Observ. Crit. 2: 75 (1910)
= Arabis densa Greene; Leafl. Bot. Observ. Crit. 2: 76 (1910)
= Arabis drummondii var. alpina S.Watson; Botany [Fortieth Parallel] 18 (1871)
= Arabis drummondii var. lyallii (S.Watson) Jeps.; Man. Fl. Pl. Calif. [Jeps.] 429 (1925)
= Arabis lyallii S.Watson; Proc. Am. Acad. 11: 122 (1876)
= Arabis multiceps Greene; Leafl. Bot. Observ. Crit. 2: 76 (1910)
= Arabis murrayi G.A.Mulligan; Rhodora, 97(890): 151 (1995 publ. 1996)
species :
Boechera macounii (S.Watson) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 267 (2007)
Name: Macoun´s rockcress
Distribution: Canada (British Columbia); USA (Idaho, Montana, Wyoming)
71 CDN 73 USA
Synonyms: hidden
= Arabis densicaulis A.Nelson; Bot. Gaz. 30: 190 (1900)
= Arabis macounii S.Watson; Proc. Am. Acad. 26: 124 (1891)
= Arabis microphylla var. macounii (S.Watson) Rollins; Rhodora 43: 428 (1941)
= Boechera microphylla var. macounii (S.Watson) Dorn; Vasc. Pl. Wyoming, ed. 3: 376 (2001)
species :
Boechera microphylla (Nutt. ex Torr. & A.Gray) Dorn; Vasc. Pl. Wyoming ed. 3: 376 (2001)
Name: Littleleaf rockcress
Distribution: Canada (British Columbia); USA (Idaho, Montana, Nevada, Oregon, Utah, Washington State, Wyoming)
71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis microphylla Nutt. ex Torr. & A.Gray; Fl. N. Am. 1: 82 (1838)
= Arabis tenuicula Greene; Leafl. Bot. Observ. Crit. 2: 82 (1910)
species :
Boechera nevadensis (Tidestr.) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 73 (2006)
Distribution: USA (Nevada: Clark, Nye Co.)
76 USA
Synonyms: hidden
= Arabis nevadensis Tidestr.; Proc. Biol. Soc. Washington 36: 182 (1923)
species :
Boechera nuttallii (Kuntze) Dorn; Vasc. Pl. Wyoming etc. 3: 376 (2001)
Name: Nuttall´s rockcress
Distribution: Canada (Alberta, British Columbia); USA (Idaho, Montana, Utah, Washington State, Wyoming)
71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis bridgeri M.E.Jones; Contr. W. Bot. 14: 38 (1912)
= Arabis macella Piper; Proc. Biol. Soc. Wash. 33: 103 (1920)
= Arabis nuttallii (Kuntze) B.L.Rob.; A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 160 (1895)
= Arabis spathulata Nutt. ex Torr. & A.Gray; (1838) (non DC. 1821)
= Erysimum nuttallii Kuntze; Revis. Gen. Pl. 2: 933 (1891), not DC. 1821
species :
Boechera ophira (Rollins) Al-Shehbaz; Novon 13(4): 387 (2003)
Name: Ophir Pass rockcress
Distribution: USA (Nevada: Toiyabe Range)
76 USA
Synonyms: hidden
= Arabis ophira Rollins; Syst. Bot. 6(1): 56 (1981)
species :
Boechera oxylobula (Greene) W.A.Weber; Phytologia 51(6): 370 (1982)
Name: Glenwood Springs rockcress
Distribution: USA (Colorado: Garfield, Gunnison, Hinsdale, Lake, Mineral, Park, Saguache Co.)
73 USA 76 USA
Synonyms: hidden
= Arabis aprica Osterh. ex A.Nelson; Coult. & Nels., Man. Bot. Rocky Mt., ed. 2: 228 (1909)
= Arabis demissa Greene; Pl. Baker 3: 8 (1901)
= Arabis oxylobula Greene; Pittonia 4: 195 (1900)
= Arabis rugocarpa Osterh.; Bull. Torr. Bot. Club 31: 357 (1904)
= Boechera demissa (Greene) W.A.Weber; Phytologia 51(6): 370 (1982)
species :
Boechera paddoensis (Rollins) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 268 (2007)
Name: Paddo rockcress
Distribution: USA (NE-Oregon, C-Washington State)
73 USA
Synonyms: hidden
= Arabis lemmonii var. paddoensis Rollins; Rhodora 43: 384 (1941)
species :
Boechera pallidifolia (Rollins) W.A.Weber; Phytologia 79(2): 65 (1995 publ. 1996)
Name: Gunnison County rockcress
Distribution: USA (Arizona, Colorado, New Mexico, Utah, Wyoming)
73 USA 76 USA 77 USA
Synonyms: hidden
= Arabis pallidifolia Rollins; Crucif. Continent. N. Amer.: 181 (1993)
species :
Boechera parishii (S.Watson) Al-Shehbaz; Novon 13(4): 388 (2003)
Name: Dwarf rockcress
Distribution: USA (California: San Bernardino Co.)
76 USA
Synonyms: hidden
= Arabis parishii S.Watson; Proc. Am. Acad. 22: 468 (1887)
species :
Boechera patens (Sullivant) Al-Shehbaz; Novon 13(4): 388 (2003)
Name: Spreading rockcress
Distribution: USA (District of Columbia, Indiana, Kentucky, Maryland, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia)
75 USA 78 USA
Synonyms: hidden
= Arabis patens Sullivant; Am. J. Sci. 1: 42 (1819), 49
= Erysimum patens (Sullivant) Kuntze; Revis. Gen. Pl. 2: 933 (1891)
species :
Boechera pauciflora (Nutt.) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 268 (2007)
Name: Hairystem rockcress
Distribution: Canada (British Columbia, California, Idaho, Montana, Nevada, Oregon, Utah, Washington State, Wyoming)
71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis arcuata var. subvillosa S.Watson; A. Gray, Syn. Fl. N. Amer. 1(1): 164 (1895)
= Arabis columbiana Macoun; Catal. Canad. Pl. 4: 304 (1888)
= Arabis elegans A.Nelson; Bot. Gaz. 30: 192 (1900) non Tineo ex Lojac. 1888
= Arabis perelegans A.Nelson; New Man. Bot. Centr. Rocky Mt. 228 (1909), nom. nov. for A. elegans A. Nelson
= Arabis sparsiflora var. columbiana (Macoun) Rollins; Rhodora 43: 405 (1941)
= Arabis sparsiflora var. subvillosa (S.Watson) Rollins; Rhodora 43: 405 (1941)
= Arabis subserrata Greene; Leafl. Bot. Observ. Crit. 2: 79 (1910)
= Boechera sparsiflora var. subvillosa (S.Watson) Dorn; Vasc. Pl. Wyoming, ed. 3. 376 (2001)
= Hesperis pauciflora (Nutt.) Kuntze; Revis. Gen. Pl. 2: 935 (1891)
= Sisymbrium pauciflorum Nutt. ex Torr. & A.Gray; Fl. N. Amer. 1: 93 (1838) (non (Grimm) Garcke 1858)
species :
Boechera paupercula (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 75 (2006)
Distribution: USA (California, Idaho, Oregon, Washington State, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Arabis lyallii var. nubigena (J.F.Macbr. & Payson) Rollins; Rhodora 43: 367 (1941)
= Arabis microphylla var. nubigena (J.F.Macbr. & Payson) Rollins; Res. Stud. State Coll. Wash. 4: 40 (1936)
= Arabis nubigena J.F.Macbr. & Payson; Contr. Gray Herb. n. s. 49: 62 (1917)
= Arabis paupercula Greene; Leafl. Bot. Observ. Crit. 2: 77 (1910)
species :
Boechera peirsonii Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 270 (2007), nom. nov.
Distribution: USA (California: San Bernardino Mts.)
76 USA
Synonyms: hidden
= Arabis breweri var. pecuniaria Rollins; Rhodora 43: 409 (1941)
species :
Boechera pendulina (Greene) W.A.Weber; Phytologia 51(6): 370 (1982)
Name: Rabbit ear rockcress
Distribution: USA (Arizona, California, Colorado, Nevada, Utah, Wyoming)
73 USA 76 USA
Synonyms: hidden
= Arabis demissa var. russeola Rollins; Rhodora 43: 398 (1941)
= Arabis diehlii M.E.Jones; Contr. W. Bot. 14: 38 (1912)
= Arabis pendulina Greene; Leaflets Bot. Obs. 2: 81 (1910)
= Arabis pendulina var. russeola (Rollins) Rollins; Contr. Gray Herb., 212: 105 (1982)
= Arabis setulosa Greene; Leafl. Bot. Observ. Crit. 2: 81 (1910)
= Boechera demissa var. pendulina (Greene) N.H.Holmgren; Brittonia 56(3): 246 (2004)
= Boechera demissa var. russeola (Rollins) N.H.Holmgren; Intermount. Fl. (Cronquist et al.) 2(B): 376 (2005)
= Boechera pendulina var. russeola (Rollins) Dorn; Vasc. Pl. Wyoming, ed. 3. 376 (2001)
species :
Boechera pendulocarpa (A.Nelson) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 77 (2006)
Name: Dropseed rockcress
Distribution: Canada (British Columbia, Yukon); USA (California, Idaho, Montana, Nevada, Oregon, Utah, Wyoming)
70 CDN 71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis holboellii var. pendulocarpa (A.Nelson) Rollins; Rhodora 43: 446 (1941)
= Arabis pendulocarpa A.Nelson; Coult. Bot. Gaz. 30: 192 (1900)
= Boechera holboellii var. pendulocarpa (A.Nelson) N.Snow; Madroño 52(1): 62 (2005)
species :
Boechera perennans (S.Watson) W.A.Weber; Phytologia 51(6): 370 (1982)
subspecies :
subsp. perennans
Name: Perennial rockcress
Distribution: USA (Arizona, California, Nevada, New Mexico, Texas, Utah); Mexico (Baja California Norte, Sonora)
76 USA 77 USA 79 MEX
Synonyms: hidden
= Arabis angulata Greene ex Wooton & Standl.; Contr. U.S. Natl. Herb. 16: 123 (1913)
= Arabis arcuata var. perennans (S.Watson) M.E.Jones; Proc. Calif. Acad. Sci. ser. 2, 5: 621 (1895)
= Arabis eremophila Greene; Pittonia 4: 194 (1900)
= Arabis perennans S.Watson; Proc. Am. Acad. 22: 467 (1887)
= Arabis recondita Greene; Pittonia 4: 195 (1900)
subspecies :
subsp. carrizozoensis (P.J.Alexander) Windham; J. Bot. Res. Inst. Texas 16(1): 10 (2022)
Distribution: USA (New Mexico)
77 USA
Synonyms: hidden
= Boechera carrizozoensis P.J.Alexander; Syst. Bot. 40(2): 592 (2015)
subspecies :
subsp. centrifendleri (P.J.Alexander) Windham; J. Bot. Res. Inst. Texas 16(1): 10 (2022)
Distribution: USA (New Mexico, Colorado, Arizona)
73 USA 76 USA 77 USA
Synonyms: hidden
= Boechera centrifendleri P.J.Alexander; Syst. Bot. 40(2): 593 (2015)
subspecies :
subsp. fendleri (S.Watson) Windham; J. Bot. Res. Inst. Texas 16(1): 10 (2022)
Name: Fendler´s rockcress
Distribution: USA (Arizona, Colorado, Nevada, New Mexico, Utah); Mexico (Chihuahua, Coahuila, San Luis Potosi, Zacatecas)
73 USA 76 USA 77 USA 79 MEX
Synonyms: hidden
= Arabis fendleri (S.Watson) Greene; Pittonia 3: 156 (1897)
= Arabis holboellii var. fendleri S.Watson; A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 164 (1895)
= Boechera fendleri (S.Watson) W.A.Weber; Phytologia 51(6): 370 (1982)
subspecies :
subsp. gracilipes (Greene) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Name: Flagstaff rockcress
Distribution: USA (Arizona, Nevada, Utah)
76 USA
Synonyms: hidden
= Arabis arcuata var. longipes S.Watson; Syn. Fl. N. Amer. 1(1): 164 (1895)
= Arabis gracilipes Greene; Pittonia 4: 193 (1900)
= Arabis perennans var. longipes (S.Watson) Jeps.; Fl. Calif. 2: 70 (1936)
= Boechera gracilipes (Greene) Dorn; Brittonia 55: 3 (2003)
subspecies :
subsp. porphyrea (Wooton & Standl.) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Distribution: USA (New Mexico, Texas)
77 USA
Synonyms: hidden
= Boechera porphyrea (Wooton & Standl.) Windham, Al-Shehbaz & P.J.Alexander; Harvard Pap. Bot. 11: 272 (2007)
= Arabis porphyrea Wooton & Standl.; Contr. U.S. Natl. Herb. 16: 123 (1913)
subspecies :
subsp. sanluisensis (P.J.Alexander) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Distribution: USA (New Mexico, Arizona, Colorado)
73 USA 76 USA 77 USA
Synonyms: hidden
= Boechera sanluisensis P.J.Alexander; Syst. Bot. 40(2): 594 (2015)
subspecies :
subsp. spatifolia (Rydb.) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Name: Spoonleaf rockcress
Distribution: USA (Colorado, New Mexico)
73 USA 77 USA
Synonyms: hidden
= Arabis fendleri var. spatifolia (Rydb.) Rollins; Rhodora 43: 394 (1941)
= Arabis spatifolia Rydb.; Fl. Rocky Mts. 361 (1917)
= Boechera fendleri subsp. spatifolia (Rydb.) W.A.Weber; Phytologia 51(6): 370 (1982)
= Boechera fendleri var. spatifolia (Rydb.) Dorn; Vasc. Pl. Wyoming, ed. 3. 375 (2001)
= Boechera spatifolia (Rydb.) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 84 (2006)
subspecies :
subsp. texana (Windham & Al-Shehbaz) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Distribution: USA (S-New Mexico, W-Texas)
77 USA
Synonyms: hidden
= Boechera texana Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 85 (2006)
subspecies :
subsp. zephyra (P.J.Alexander) Windham; J. Bot. Res. Inst. Texas 16(1): 11 (2022)
Distribution: USA (New Mexico, Texas)
77 USA
Synonyms: hidden
= Boechera zephyra P.J.Alexander; Syst. Bot. 40(2): 594 (2015)
species :
Boechera pinetorum (Tidestr.) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 271 (2007)
Distribution: USA (California, Nevada, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis divaricarpa var. pinetorum (Tidestr.) B.Boivin; Canad. Field-Naturalist 65: 16 (1951)
= Arabis holboellii var. pinetorum (Tidestr.) Rollins; Rhodora 43: 447 (1941)
= Arabis pinetorum Tidestr.; Proc. Biol. Soc. Wash. 36: 182 (1923)
= Boechera holboellii var. pinetorum (Tidestr.) Dorn; Vasc. Pl. Wyoming, ed. 3. 375 (2001)
species :
Boechera pinzlae (Rollins) Al-Shehbaz; Novon 13(4): 388 (2003)
Name: Boundary Peak rockcress
Distribution: USA (EC-California: Mono Co., W-Nevada: Esmeralda Co.)
76 USA
Synonyms: hidden
= Arabis pinzlae Rollins; Contr. Gray Herb., 212: 110 (1982)
species :
Boechera platysperma (A.Gray) Al-Shehbaz; Novon 13(4): 388 (2003)
Name: Pioneer rockcress
Distribution: USA (California, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis inamoena Greene; Repert. Spec. Nov. Regni Veg. 5: 243 (1908)
= Arabis oligantha Greene; Repert. Spec. Nov. Regni Veg. 5: 243 (1908)
= Arabis platysperma A.Gray; Proc. Am. Acad. 6: 519 (1864 publ. 1865)
= Erysimum platyspermum (A.Gray) Kuntze; Revis. Gen. Pl. 2: 933 (1891)
species :
Boechera polyantha (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 78 (2006)
Distribution: USA (Idaho, Montana, Oregon, Washington State)
73 USA
Synonyms: hidden
= Arabis macdougalii Rydb.; Bull. Torr. Bot. Club 39: 326 (1912)
= Arabis polyantha Greene; Leafl. Bot. Observ. Crit. 2: 80 (1910)
species :
Boechera pratincola (Greene) Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 245 (2007)
Distribution: USA (California, Idaho, Nevada, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis drummondii var. pratincola (Greene) M.Hopkins; Rhodora 39: 142 (1937)
= Arabis nemophila Greene; Leafl. Bot. Observ. Crit. 2: 78 (1910)
= Arabis pratincola Greene; Repert. Spec. Nov. Regni Veg. 5: 244 (1908)
species :
Boechera pseudoconsanguinea Windham & Allphin; J. Bot. Res. Inst. Texas 16(1): 16, figs. 3-4 (2022)
Distribution: USA (New Mexico: San Juan Co.)
76 USA 77 USA
species :
Boechera puberula (Nutt.) Dorn; Brittonia 55: 3 (2003)
Name: Silver rockcress
Distribution: USA (California, Nevada, Oregon, Utah)
73 USA 76 USA
Synonyms: hidden
= Arabis arida Greene; Pittonia 4: 190 (1900)
= Arabis beckwithii S.Watson; Proc. Am. Acad. 22: 467 (1887)
= Arabis lignipes var. impar A.Nelson; Bot. Gaz. 54: 139 (1912)
= Arabis puberula Nutt. ex Torr. & A.Gray; Fl. N. Am. 1: 82 (1838)
= Arabis sabulosa M.E.Jones; Contr. W. Bot. 14: 40 (1912)
= Arabis sabulosa var. colorata M.E.Jones; Contr. W. Bot. 14: 41 (1912)
= Arabis sabulosa var. frigida M.E.Jones; Contr. W. Bot. 14: 41 (1912)
= Arabis subpinnatifida var. beckwithii (S.Watson) Jeps.; Man. Fl. Pl. Calif. [Jeps.] 431 (1925)
= Arabis subpinnatifida var. impar (A.Nelson) Rollins; Res. Stud. State Coll. Wash. 4: 32 (1936)
= Boechera beckwithii (S.Watson) Dorn; Brittonia 55: 1-3 (2003)
= Erysimum puberulum (Nutt. ex Torr. & A.Gray) Kuntze; Revis. Gen. Pl. 2: 933 (1891)
species :
Boechera pulchra (Jones ex S.Watson) W.A.Weber; Phytologia 51(6): 370 (1982)
Name: Beautiful rockcress
Distribution: USA (California, Nevada); Mexico (Baja California Norte)
76 USA 79 MEX
Synonyms: hidden
= Arabis pulchra M.E.Jones ex S.Watson; Proc. Am. Acad. 22: 468 (1887)
species :
Boechera pusilla (Rollins) Dorn; Vasc. Pl. Wyoming ed. 3: 376 (2001)
Name: Fremont County rockcress
Distribution: USA (SW-Wyoming)
73 USA
Synonyms: hidden
= Arabis pusilla Rollins; Contr. Gray Herb., 212: 107 (1982)
species :
Boechera pygmaea (Rollins) Al-Shehbaz; Novon 13(4): 388 (2003)
Name: Tulare County rockcress
Distribution: USA (California: Inyo, Tulare Co.)
76 USA
Synonyms: hidden
= Arabis pygmaea Rollins; Rhodora 43: 476 (1941)
species :
Boechera quadrangulensis Windham & Allphin; J. Bot. Res. Inst. Texas 16(1): 19, figs. 5-6 (2022)
Distribution: USA (New Mexico: San Juan Co.)
76 USA 77 USA
species :
Boechera quebecensis Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 246 (2007), nom. nov.
Distribution: Canada (Quebec)
72 CDN
Synonyms: hidden
= Arabis divaricarpa var. de-champlainii B.Boivin; Naturaliste Canad. 94: 645 (1967)
species :
Boechera rectissima (Greene) Al-Shehbaz; Novon 13(4): 388 (2003)
Name: Bristlyleaf rockcress
Distribution: USA (California, Oregon)
73 USA 76 USA
Synonyms: hidden
= Arabis rectissima Greene; Pittonia 4: 191 (1900)
= Arabis rectissima var. simulans Rollins; Crucif. Continent. N. Amer.: 195 (1993)
= Arabis setigera Greene; Leafl. Bot. Observ. Crit. 2: 80 (1910)
= Arabis wyndii L.F.Hend.; Rhodora 32: 25 (1930)
species :
Boechera retrofracta (Graham) Á.Löve & D.Löve; Taxon 31(1): 125 (1982)
Name: Second rockcress
Distribution: Alaska; Canada (Alberta, British Columbia, Manitoba, N. W. T., Ontario, Quebec, Saskatchewan); USA (California, Idaho, Michigan, Montana, Nevada, Oregon, Utah, Washington State, Wyoming)
70 ASK CDN 71 CDN 72 CDN 73 USA 75 USA 76 USA
Synonyms: hidden
= Arabis arcuata var. secunda (Howell) B.L.Rob.; Syn. Fl. N. Amer. 1(1): 164 (1895)
= Arabis caduca A.Nelson; Coult. & Nels., Man. Bot. Rocky Mt., ed. 2: 229 (1909)
= Arabis exilis A.Nelson; Bull. Torr. Bot. Club 26: 123 (1899)
= Arabis holboellii var. retrofracta (Graham) Rydb.; Contr. U. S. Natl. Herb. 3: 484 (1896)
= Arabis holboellii var. secunda (Howell) Jeps.; Man. Fl. Pl. Calif. [Jeps.] 430 (1925)
= Arabis kochii Blank.; Sci. Stud. Montana Coll. Agric., Bot. 1: 57 (1905)
= Arabis lignipes A.Nelson; Bot. Gaz. 30: 191 (1900)
= Arabis retrofracta Graham; Edinburgh New Phil. J. 7: 345 (1829)
= Arabis retrofracta var. multicaulis B.Boivin; Canad. Field-Naturalist 65: 17 (1951)
= Arabis rhodantha Greene; Pittonia 3: 155 (1897)
= Arabis secunda Howell; Erythea 3: 33 (1895)
= Arabis sparsiflora subsp. secunda (Howell) Piper; Contr. U. S. Natl. Herb. 11: 294 (1906)
= Arabis tenuis Greene; Pittonia 4: 189 (1900)
= Boechera exilis (A.Nelson) Dorn; Vasc. Pl. Wyoming, ed. 3. 375 (2001)
= Boechera holboellii var. secunda (Howell) Dorn; Vasc. Pl. Wyoming, ed. 3. 376 (2001)
= Turritis retrofracta (Graham) Hook.; Fl. Bor.-Amer. (Hook.) 1: (1829)
= Turritis retrofracta (Graham) Lunell; Am. Midl. Nat. 4: 412 (1916)
species :
Boechera rigidissima (Rollins) Al-Shehbaz; Novon 13(4): 389 (2003)
Name: Trinity Mountain rockcress
Distribution: USA (California, Nevada)
76 USA
Synonyms: hidden
= Arabis rigidissima Rollins; Rhodora 43: 380 (1941)
= Arabis rigidissima var. demota Rollins; J. Arnold Arbor. 64(4): 498 (1983)
species :
Boechera rollei (Rollins) Al-Shehbaz; Novon 13(4): 389 (2003)
Name: Klamath River rockcress
Distribution: USA (California: Siskiyou Co.)
76 USA
Synonyms: hidden
= Arabis rollei Rollins; Harvard Pap. Bot. 4: 43 (1993)
species :
Boechera rollinsiorum Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 81 (2006)
Distribution: USA (C-Idaho: Galena Summit)
73 USA
species :
Boechera saximontana (Rollins) Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 248 (2007)
Name: Cross Mountain rockcress
Distribution: USA (Idaho: Blaine, Custer, Lemhi Co., Wyoming: Big Horn, Fremont Co.)
73 USA 74 USA
Synonyms: hidden
= Arabis microphylla var. saximontana Rollins; Rhodora 43: 429 (1941)
= Arabis pendulocarpa var. saximontana (Rollins) Dorn; Vasc. Pl. Wyoming: 295 (1988)
= Arabis williamsii var. saximontana (Rollins) Rollins; Amer. J. Bot. 70(4): 627 (1983)
= Boechera williamsii var. saximontana (Rollins) Dorn; Vasc. Pl. Wyoming, ed. 3. 376 (2001)
species :
Boechera schistacea (Rollins) Dorn; Brittonia 55: 3 (2003)
Name: Divided rockcress
Distribution: USA (Nevada, S-Utah)
76 USA
Synonyms: hidden
= Arabis schistacea Rollins; Contr. Dudley Herb., Stanford Univ. 3: 370 (1946)
species :
Boechera serpenticola Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 82 (2006)
Distribution: USA (California: Shasta Co., Trinity Co.)
76 USA
species :
Boechera shevockii Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 82 (2006)
Distribution: USA (California: known only from the type, S-Sierra Nevada in Tulare Co.)
76 USA
species :
Boechera shockleyi (Munz) Dorn; Brittonia 55: 3 (2003)
Name: Shockley´s rockcress
Distribution: USA (Nevada, California, Utah)
76 USA
Synonyms: hidden
= Arabis shockleyi Munz; Bull. S. Calif. Acad. Sci. 31: 62 (1932)
species :
Boechera sparsiflora (Nutt. ex Torr. & A.Gray) Dorn; Vasc. Pl. Wyoming ed. 3: 376 (2001)
Name: Sicklepod rockcress
Distribution: Canada (British Columbia); USA (California, Idaho, Nevada, Oregon, Utah, Washington State)
71 CDN 73 USA 76 USA
Synonyms: hidden
= Arabis arcoidea A.Nelson; Bot. Gaz. 53: 220 (1912)
= Arabis campyloloba Greene; Pittonia 4: 192 (1900)
= Arabis peramoena Greene; Repert. Spec. Nov. Regni Veg. 5: 242 (1908)
= Arabis polytricha Greene; Leafl. Bot. Observ. Crit. 2: 72 (1910)
= Arabis sparsiflora Nutt. ex Torr. & A.Gray; Fl. N. Am. 1: 81 (1838)
= Arabis sparsiflora var. peramoena (Greene) Rollins; Res. Stud. State Coll. Wash. 4: 25 (1936)
species :
Boechera subpinnatifida (S.Watson) Al-Shehbaz; Novon 13(4): 389 (2003)
Name: Klamath rockcress
Distribution: USA (California, Idaho, Nevada, Oregon, Utah)
73 USA 76 USA
Synonyms: hidden
= Arabis subpinnatifida S.Watson; Proc. Am. Acad. 20: 353 (1885)
species :
Boechera suffrutescens (S.Watson) Dorn; Brittonia 55: 3 (2003)
Name: Woody rockcress
Distribution: USA (California, Idaho, Nevada, Oregon, Washington State)
73 USA 76 USA
Synonyms: hidden
= Arabis dianthifolia Greene; Leafl. Bot. Observ. Crit. 2: 76 (1910)
= Arabis suffrutescens S.Watson; Proc. Am. Acad. 17: 362 (1881 publ. 1882)
species :
Boechera tiehmii (Rollins) Al-Shehbaz; Novon 13(4): 389 (2003)
Name: Carson Range rockcress
Distribution: USA (E-California: Mono Co., Nevada: Washoe Co.)
76 USA
Synonyms: hidden
= Arabis tiehmii Rollins; J. Arnold Arbor. 64(4): 496 (1983)
species :
Boechera tularensis Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 249 (2007)
Distribution: USA (California: Fresno Co., Tulare Co.)
76 USA
species :
Boechera ultra-alsa Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 86 (2006)
Distribution: USA (California: only holotype known, from Snow Mountain in Lake Co.)
76 USA
species :
Boechera williamsii (Rollins) Al-Shehbaz; Novon 13(4): 389 (2003)
Name: Wind River rockcress
Distribution: USA (WC-Wyoming: Fremont, Sublette Co.)
73 USA
Synonyms: hidden
= Arabis williamsii Rollins; Syst. Bot. 6(1): 62 (1981)
species :
Boechera xylopoda Windham & Al-Shehbaz; Harvard Pap. Bot. 12: 250 (2007)
Distribution: USA (California, Nevada)
76 USA
Synonyms: hidden
= Arabis pulchra var. glabrescens Wiggins; Contr. Dudley Herb. 1: 100 (1929)
= Arabis pulchra var. gracilis M.E.Jones; Contr. W. Bot. 8: 41 (1898)
= Arabis pulchra var. viridis Jeps.; Fl. Calif. [Jeps.] 2: 70 (1936)
= Arabis trichopoda Greene; Repert. Spec. Nov. Regni Veg. 5: 242 (1908), nom. illeg.
= Boechera pulchra var. gracilis (M.E.Jones) Dorn; Brittonia 55: 3 (2003)
species :
Boechera yorkii S.Boyd; Madroño 51: 387 (2004)
Distribution: USA (California: Last Chance Mts., Inyo Co.)
76 USA
species :
Boechera ×rubicundula (Jeps.) Windham & Al-Shehbaz; Harvard Pap. Bot. 11: 273 (2007)
Distribution: USA (WC-California: Mt. Day)
76 USA
Remarks: B. arcuata x B. breweri
Synonyms: hidden
= Arabis arcuata var. rubicundula Jeps.; Fl. California 2: 69 (1936)
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A complete, synonymic checklist of the Higher Plants of the World


Version 19.2 (March 25th, 2024)

Covering 354,631 accepted species,
8,631 hybrids, 47,815 accepted infraspecific taxa and 995,902 synonyms,
in total 1,406,979* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]


With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,290 pictures of 15,532 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life