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479.0000 Family Convolvulaceae Juss.; Gen. Pl. [Jussieu] 132 (1789), nom. cons.
58 genera, ca. 1900 spp. Latest phylogeny: Simões et al. (2022), which will not be the last word in a rapidly changing system.
Species listed in database: 1972; hybrids: 14
= Cressaceae Raf.; Ann. Gén. Sci. Phys. 8: 270 (1821)
= Cuscutaceae Dumort.; Anal. Fam. Pl. 20, 25 (1829), nom. cons.
= Dichondraceae Dumort.; Anal. Fam. Pl. 20, 24 (1829), nom. cons.
= Erycibaceae Endl. ex Meisner; Pl. Vasc. Gen. [Meisner], Tab. Diagn. 272, Comm. 185 (1840)
= Evolvulaceae Bercht. & J.Presl; Přir. Rostlin Aneb. Rostl. 2: 130, 132 (1825)
= Humbertiaceae Pichon; Notul. Syst. (Paris) 13: 23 (1947), nom. cons.
= Poranaceae J.Agardh; Theoria Syst. Pl. 364 (1858)
479.4507 Genus Stylisma Raf.; Neogenyton 2 (1825)
Distribution: S- and E-USA
Species listed in database: 6
= Plesilia Raf.; New Fl. [Rafinesque] 4: 55 (1838)
species :
Stylisma abdita Myint; Brittonia 18: 107 (1966)
Name: Showy dawnflower
Distribution: USA (Florida)
78 USA
Synonyms: hidden
= Bonamia abdita (Myint) R.W.Long; Rhodora 72: 32 (1970)
species :
Stylisma aquatica (Walter) Raf.; Neogenyton 2 (1825), Chapm. Fl. S. U. St. 346
Name: Water dawnflower
Distribution: USA (Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Texas)
77 USA 78 USA
Synonyms: hidden
= Bonamia aquatica (Walter) A.Gray; Manual [A.Gray], ed. 5: 376 (1867)
= Bonamia michauxii (Fernald & Schubert) K.A.Wilson; J. Arnold Arbor. 41: 306 (1960)
= Breweria aquatica (Walter) A.Gray; Syn. Fl. N. Amer. 2(1): 217 (1878)
= Breweria michauxii Fernald & Schubert; Rhodora 51: 37 (1949)
= Convolvulus aquaticus Walter; Fl. Carol. [Walter] 94 (1788)
= Convolvulus erianthus Willd. ex Spreng.; Syst. Veg., ed. 16 [Sprengel] 1: 610 (1824)
species :
Stylisma humistrata (Walter) Chapm.; Fl. South. U.S. 346 (1860)
Name: Southern dawnflower
Distribution: USA (Alabama, Arkansas, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina, Tennessee, Texas, Virginia)
77 USA 78 USA
Synonyms: hidden
= Bonamia humistrata (Walter) A.Gray; Proc. Amer. Acad. Arts 5: 337 (1862)
= Breweria humistrata (Walter) A.Gray; Syn. Fl. N. Amer. 2(1): 217 (1878)
= Breweria tenella (Desr.) Peter; Nat. Pflanzenfam. [Engler & Prantl] IV, 3a: 16 (1891)
= Breweria trichosanthes Small; Fl. S.E. U.S. [Small] 959 (1903), nom. superfl.
= Convolvulus humistratus Walter; Fl. Carol. [Walter] 94 (1788)
= Convolvulus tenellus Desr.; Encycl. [J.Lamarck et al.] 3: 559 (1792)
= Convolvulus trichosanthes Michx.; Fl. Bor.-Amer. [Michaux] 1: 137 (1803), nom. superfl.
= Convolvulus trichosanthes var. tenellus (Desr.) Pursh; Fl. Amer. Sept. [Pursh] 1: 143 (1814)
= Stylisma elliptica Raf.; New Fl. [Rafinesque] 4: 55 (1838)
= Stylisma evolvuloides Choisy; Mém. Soc. Phys. Genève 8: 82 (1837) [Conv. Rar. 160], nom. nud., et Prodr. [A.P. de Candolle] 9: 450 (1845), nom. superfl.
= Stylisma peduncularis Raf.; New Fl. [Rafinesque] 4: 55 (1838)
= Stylisma tenella (Desr.) Raf.; Herb. Raf. 48 (1833)
= Stylisma trichosanthes (Michx.) House; Bull. Torrey Bot. Club 34: 148 (1907)
species :
Stylisma patens (Desr.) Myint; Brittonia 18: 110 (1966)
subspecies :
subsp. patens
Name: Coastal plain dawnflower
Distribution: USA (Alabama, Florida, Georgia, Louisiana, Mississippi, North Carolina, South Carolina)
78 USA
Synonyms: hidden
= Bonamia patens (Desr.) Shinners; Castanea 27: 74 (1962)
= Breweria patens (Desr.) Fernald; Rhodora 42: 298 (1940)
= Convolvulus patens Desr.; Encycl. [J.Lamarck et al.] 3: 547 (1792)
= Convolvulus trichosanthes var. patens (Desr.) Pursh; Fl. Amer. Sept. [Pursh] 1: 143 (1814)
= Stylisma heterophyla Raf.; New Fl. [Rafinesque] 4: 54 (1838)
subspecies :
subsp. angustifolia (Nash) Myint; Brittonia 18: 112 (1966)
Name: Coastal plain dawnflower
Distribution: USA (Florida, Georgia, North Carolina, South Carolina)
78 USA
Synonyms: hidden
= Bonamia angustifolia (Nash) K.A.Wilson; J. Arnold Arbor. 41: 306 (1960)
= Bonamia patens var. angustifolia (Nash) Shinners; Castanea 27: 75 (1962)
= Breweria angustifolia Nash; Bull. Torrey Bot. Club 22: 155 (1895)
= Stylisma angustifolia (Nash) House; Bull. Torrey Bot. Club 34: 148 (1907)
= Stylisma patens var. angustifolia (Nash) Shinners; Sida 3: 347 (1969)
species :
Stylisma pickeringii (Torr. ex M.A.Curtis) A.Gray; Manual [A.Gray], ed. 2: 335 (1856)
Name: Pickering´s dawnflower
Distribution: USA (Alabama, Georgia, Mississippi, North Carolina, New Jersey, South Carolina)
75 USA 78 USA
Synonyms: hidden
= Bonamia pickeringii (Torr. ex M.A.Curtis) A.Gray; Manual [A.Gray], ed. 5: 376 (1867), et Syn. Fl. N. Amer. 2(1): 217 (1878)
= Breweria pickeringii (Torr. ex M.A.Curtis) A.Gray; Syn. Fl. N. Amer. 2(1): 217 (1878)
= Breweria pickeringii var. angustifolia (Choisy) Fernald & B.G.Schub.; Rhodora 51: 42 (1949)
= Breweria pickeringii var. caesariensis Fernald & B.G.Schub.; Rhodora 51: 42 (1949)
= Breweria pickeringii var. cuthbertii Fernald & B.G.Schub.; Rhodora 51: 42 (1949)
= Convolvulus pickeringii Torr. ex M.A.Curtis; Boston J. Nat. Hist. 1: 129 (1835)
= Evolvulus cuneifolius Raf.; Fl. Tellur. 4: 82 (1838)
= Plesilia cuneifolia (Raf.) Raf.; Autik. Bot. 22 (1840)
= Stylisma evolvuloides var. angustifolia Choisy; Prodr. [A.P. de Candolle] 9: 450 (1845)
variant :
var. pattersonii (Fernald & Schub.) Myint; Brittonia 18: 114 (1966)
Name: Patterson´s dawnflower
Distribution: USA (Arkansas, Iowa, Illinois, Kansas, Louisiana, Missouri, Mississippi, Oklahoma, Texas)
74 USA 75 USA 77 USA 78 USA
Synonyms: hidden
= Breweria pickeringii var. pattersonii Fernald & B.G.Schub.; Rhodora 51: 42, pl. 1129 (1949)
= Stylisma pattersonii (Fernald & B.G.Schub.) G.N.Jones; Vasc. Pl. Illinois [Jones & Fuller] 387 (1955)
species :
Stylisma villosa (Nash) House; Bull. Torrey Bot. Club 34: 149 (1907)
Name: Hairy dawnflower
Distribution: USA (Florida, Georgia, Louisiana, Mississippi, Texas)
77 USA 78 USA
Synonyms: hidden
= Argyreia multiflora (Hallier f.) Baker; Fl. Trop. Afr. [Oliver et al.] 4(2): 202 (1906), nom. illeg.
= Bonamia villosa (Nash) K.A.Wilson; J. Arnold Arbor. 41: 306 (1960)
= Breweria villosa Nash; Bull. Torrey Bot. Club 22: 154 (1895)
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A complete, synonymic checklist of the Higher Plants of the World


Version 26.08 (August 2nd, 2026)

Covering 360,349 accepted species,
8,927 hybrids, 47,544 accepted infraspecific taxa and 1,011,667 synonyms,
in total 1,428,487* names

[*about 20,000 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 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life