Flora of North America species comparison

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Camissoniopsis cheiranthifolia subsp. cheiranthifolia

Onagraceae subfam. onagroideae
Photo is of parent taxon

beach evening-primrose
Stems

primarily herbaceous, usually prostrate or decumbent, moderately strigillose, rarely densely silvery strigillose.

Leaves

stipules present or absent.
Flowers

floral tube 2.1–4.2(–4.8) mm;

sepals 4–5.6(–6.7) mm;

petals 6–11 mm; episepalous filaments 2.8–4.5 mm, epipetalous filaments 1.5–3 mm, anthers 1–1.5 mm;

style 6–9 mm, stigma usually surrounded by anthers at anthesis, rarely exserted beyond anthers.

floral tube present or, rarely, absent;

sepals 2 or 4 (very rarely 3), deciduous with floral tube, petals, and stamens;

petals yellow, white, pink, red, rarely in combination.
xI> = 7, 10, 11, 15, 18.

2n

= 14.

Camissoniopsis cheiranthifolia subsp. cheiranthifolia

Onagraceae subfam. onagroideae
Phenology Flowering Apr–Aug.
Habitat Coastal sandy slopes and flats.
Elevation 0–100 m. (0–300 ft.)
Distribution
from FNA
CA; OR
[BONAP county map]
North America; Mexico; Central America; South America; West Indies; Eurasia; Pacific Islands (New Zealand, Society Islands); Australia
Discussion

Subspecies cheiranthifolia occurs from Coos Bay, Curry County, Oregon, south to Point Conception, Santa Barbara County, California; on the east shore of San Francisco Bay in Alameda, Contra Costa, and Sacramento counties, California, and on San Miguel, Santa Rosa, Santa Cruz, San Nicolas, and San Clemente islands (P. H. Raven 1969).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Genera 21, species 582 (16 genera, 246 species in the flora).

Onagroideae encompass the main lineage of the family, after the early branching of Ludwigia (R. A. Levin et al. 2003, 2004). This large and diverse lineage is distinguished by the presence of a floral tube beyond the apex of the ovary; sepals deciduous with the floral tube, petals, and stamens; pollen shed in monads (or tetrads in Chylismia sect. Lignothera and all but one species of Epilobium); ovular vascular system exclusively transseptal (R. H. Eyde 1981); ovule archesporium multicellular (H. Tobe and P. H. Raven 1996); and change in base chromosome number from x = 8 in Ludwigia to x = 10 or x = 11 at the base of Onagroideae (Raven 1979; Levin et al. 2003). Molecular work (Levin et al. 2003, 2004) substantially supports the traditional tribal classification (P. A. Munz 1965; Raven 1979, 1988); tribes are recognized to delimit major branches within the phylogeny of Onagroideae, where the branches comprise strongly supported monophyletic groups of one or more genera.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Camissoniopsis > Camissoniopsis cheiranthifolia Onagraceae
Sibling taxa
C. cheiranthifolia subsp. suffruticosa
Subordinate taxa
Synonyms Holostigma spirale, Oenothera cheiranthifolia var. nitida, O. nitida, O. spiralis, O. spiralis var. nitida, Sphaerostigma nitidum, S. spirale, S. spirale var. clypeatum
Name authority unknown W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 41. (2007)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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