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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids II
Ordo: Myrtales

Familia: Onagraceae
Subfamilia: Onagroideae
Tribus: Onagreae
Genus: Camissonia
Species: C. benitensis – C. campestris – C. contorta – C. dentata – C. dominguez-escalantorum – C. integrifolia – C. kernensis – C. lacustris – C. parvula – C. pubens – C. pusilla – C. sierrae – C. strigulosa

Camissonia Link, Jahrb. Gewächsk. 1(1): 186. (1818)

Type species: Camissonia dentata Reiche, Anales Univ. Chile 98: 482. (1897) et Reiche, Flora de Chile, 2: 264. (1898) originally designated as synonym Camissonia flava Link, Jahrb. Gewächsk. 1(1): 186. (1818)


Camissonia sect. Sphaerostigma (Ser.) Raven, Brittonia 16: 284. (1964)
Type species: Oenothera dentata Cavanilles [=Camissonia dentata (Cavanilles) Reiche] designated by Raven, Brittonia 16: 280. (1964)
Oenothera sect. Sphaerostigma Ser. in DC., Prodr. 3: 46. (1828)
Sphaerostigma (Ser.) Fisch. & C.A.Mey., Index Sem. Hortus Bot. Petrop. 2: 49. (1836)
Type species: non design.
Oenothera [unranked] Sphaerostigma (Ser.) Torrey & A. Gray, Fl. N. Amer. 1: 508. (1840)
Type species: non design.
Oenothera subg. Sphaerostigma (Ser.) Jepson ex Munz, Bot. Gaz. (Crawfordsville) 85: 234. (1928)
Type species: non design.


Link, J.H.F. 1818. Jahrbücher der Gewächskunde. Berlin and Leipzig 1(1): 186.
International Plant Names Index. 2017. Camissonia. Published online. Accessed: Nov. 3 2017.
Wagner, W.L., Hoch, P.C. & Raven, P.H. 2007. Revised Classification of the Onagraceae. Systematic Botany Monographs 83: 1–240. JSTOR PDF Reference page.
Wagner, W.L. & Hoch, P.C. 2005-. Camissonia in: Onagraceae, The Evening Primrose Family website

Camissonia, sometimes commonly known as sun cup or sundrop, is a genus of annual and perennial plants in the evening primrose family Onagraceae. A total of 12 species are known, nearly all from western North America, especially in the California Floristic Province, but also one from South America. Previous circumscriptions of the genus had recognized up to 62 species before it was split among other closely related genera.[1]

The flowers generally open at dawn and maybe yellow, white, or lavender, often with darker shades at the base. They are usually cup-shaped, thus the common name.

Formerly included in Oenothera, the species of Camissonia are distinguished by having a club- or head-shaped stigma, instead of the 4-part-divided stigma of Oenothera or Clarkia.

Camissonia species are used as food plants by the larvae of some Lepidoptera species including Schinia cupes and Schinia deserticola, both of which feed on C. claviformis, the latter exclusively.

The genus is named after the botanist Adelbert von Chamisso.
Selected species

According to The Plant List, the genus includes the following accepted species:[2]

Camissonia andina (Nutt.) P.H.Raven
Camissonia bairdii S.L.Welsh
Camissonia benitensis P.H.Raven
Camissonia breviflora (Torr. & A.Gray) P.H.Raven
Camissonia campestris (Greene) P.H.Raven (Mojave suncup)
Camissonia contorta (Douglas) Kearney
Camissonia dentata(Cav.) Reiche
Camissonia dominguez-escalantorum N.D.Atwood, L.C.Higgins & S.L.Welsh
Camissonia graciliflora (Hook. & Arn.) P.H.Raven
Camissonia hilgardii (Greene) P.H.Raven
Camissonia integrifolia P.H.Raven
Camissonia kernensis (Munz) P.H.Raven
Camissonia lacustris P.H.Raven
Camissonia ovata (Nutt. ex Torr. & A.Gray) P.H.Raven
Camissonia palmeri (S.Watson) P.H.Raven
Camissonia parvula (Nutt.) P.H.Raven
Camissonia pubens (S.Watson) P.H.Raven
Camissonia pusilla P.H.Raven
Camissonia sierrae P.H.Raven
Camissonia strigulosa (Fisch. & C.A.Mey.) P.H.Raven
Camissonia subacaulis (Pursh) P.H.Raven
Camissonia tanacetifolia (Torr. & A.Gray) P.H.Raven


Wagner WL, PC Hoch, and PH Raven. 2007. Revised classification of the Onagraceae. Systematic Botany Monographs, 83: 1-240.

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