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221.0000 Family Onagraceae Juss.; Gen. Pl. [Jussieu] 317 (1789), nom. cons.
20 genera, ca. 750 spp., of them about 50 hybrids/microspecies in Oenothera. Phylogeny: Maurin et al. 2021
Species listed in database: 697; hybrids: 172
= Circaeaceae Bercht. & J.Presl; Přír. Rostlin 232 (1820)
= Epilobiaceae Vent.; Tabl. Règn. Vég. 3: 307 (1799)
= Fuchsiaceae Lilja; Skånes Fl., ed. 2: 846, 980 (1870)
= Isnardiaceae Martinov; Tekhno-Bot. Slovar 348 (1820)
= Jussiaeaceae Martinov; Tekhno-Bot. Slovar 350 (1820)
= Lopeziaceae Lilja; Skånes Fl., ed. 2: 980 (1870)
= Oenotheraceae C.C.Robin; Voy. Int. Louisiane 3: 490 (1807)
= Oenotheraceae D.L.Fu; Amer. J. Agric. Forest. 12(5): 352 (2024), nom. illeg.
221.2710 Genus Neoholmgrenia W.L.Wagner & Hoch; Novon 19(1): 131 (2009)
Distribution: W-USA
Species listed in database: 2
= Holmgrenia W.L.Wagner & Hoch; Syst. Bot. Monogr. 83: 127 (2007), nom. illeg.
species :
Neoholmgrenia andina (Nutt.) W.L.Wagner & Hoch; Novon 19(1): 131 (2009)
Name: Blackfoot River evening primrose
Distribution: Canada (Alberta, British Columbia, Saskatchewan); USA (California, Colorado, Idaho, Montana, Nevada, Oregon, Utah, Washington State, Wyoming)
71 CDN 73 USA 76 USA
Synonyms: hidden
= Camissonia andina (Nutt.) P.H.Raven; Brittonia 16: 285 (1964)
= Holmgrenia andina (Nutt.) W.L.Wagner & Hoch; Syst. Bot. Monogr. 83: 210 (2007)
= Oenothera andina f. tripetala H.Lév.; Monogr. Oenothera [Léveillé] 182 (1905)
= Oenothera andina Nutt.; Fl. N. Amer. [Torrey & A.Gray] 1: 512 (1840)
= Oenothera andina var. anomala M.Peck; Torreya 32: 151 (1932)
= Sphaerostigma andinum (Nutt.) Walp.; Repert. Bot. Syst. [Walpers] 2: 79 (1843)
= Sphaerostigma andinum var. minutum A.Nelson; Bot. Gaz. 40: 56 (1905)
species :
Neoholmgrenia hilgardii (Greene) W.L.Wagner & Hoch; Novon 19(1): 132 (2009)
Name: Hilgard´s suncup
Distribution: USA (Oregon, Washington State)
73 USA
Synonyms: hidden
= Camissonia hilgardii (Greene) P.H.Raven; Brittonia 16: 285 (1964)
= Holmgrenia hilgardii (Greene) W.L.Wagner & Hoch; Syst. Bot. Monogr. 83: 210 (2007)
= Oenothera andina var. hilgardii (Greene) Munz; Bot. Gaz. 85: 251 (1928)
= Oenothera hilgardii Greene; Bull. Torrey Bot. Club 10: 41 (1883)
= Sphaerostigma andinum var. hilgardii (Greene) A.Nelson; Bot. Gaz. 40: 56 (1905)
= Sphaerostigma hilgardii (Greene) Small; Bull. Torrey Bot. Club 23: 188 (1896)
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A complete, synonymic checklist of the Higher Plants of the World

Version 26.03 (March 30th, 2026)

Covering 359,184 accepted species,
8,882 hybrids, 47,737 accepted infraspecific taxa and 1,007,635 synonyms,
in total 1,423,438* 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 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life