Camissoniopsis cheiranthifolia

Camissoniopsis cheiranthifolia, the beach suncup or beach evening primrose, is a species of the evening primrose family and is native to open dunes and sandy soils of coastal California and Oregon.

Camissoniopsis cheiranthifolia
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Onagraceae
Genus: Camissoniopsis
Species:
C. cheiranthifolia
Binomial name
Camissoniopsis cheiranthifolia
Synonyms
  • Agassizia cheiranthifolia (Hornem. ex Spreng.) Spach
  • Camissonia cheiranthifolia (Hornem. ex Spreng.) Raim.
  • Holostigma cheiranthifolium (Hornem. ex Spreng.) Spach
  • Oenothera cheiranthifolia Hornem. ex Spreng.

The beach suncup grows prostrate along the beach surface, forming mats more than 1 m across. It forms long stems growing from a central crown, lined with silvery grey-green leaves. The prostrate form and swinging stems allow the plant to survive well on the windy, shifting sands of the coast. The four-petalled flowers open in the morning (typical among suncups) and are bright yellow, fading to reddish.

The two subspecies are:

  • Camissoniopsis cheiranthifolia subsp. cheiranthifolia
  • Camissoniopsis cheiranthifolia subsp. suffruticosa (S.Watson) W.L.Wagner & Hoch
Beach evening primrose flowers
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