General:
Annual herb from a short taproot; stems several to many, ascending, 3-15 cm long, simple to forked; plants minutely-hairy with short, stiff, appressed hairs.

Leaves:
Alternate, closely spaced at stem tips, linear to narrowly spoon-shaped, 5-25 mm long, 0.5-2 mm wide, entire; the lower branches nearly leafless.

Flowers:
Inflorescence a short, crowded, erect spike; bracts linear; flowers unstalked; hypanthium 0.8- 2 mm long; petals lemon yellow, egg-shaped, 0.8-2.3 mm long; sepals 0.8-2 mm long, bent downward; stamens opposite petals; stigma globe-shaped.

Fruits:
Capsules, ascending, narrowly spindle-shaped, 5-10 mm long, 1-1.3 mm wide, nearly straight, flat, fine grey-hairy, 4-chambered, walls somewhat swollen by seeds; seeds in 1 row per chamber, 0.7-1.3 mm long, smooth, glossy.

Source:  The Illustrated Flora of British Columbia

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Illustration Source:  The Illustrated Flora of British Columbia

Synonyms and Alternate Names:
Camissonia andina (Nutt.) P.H. Raven
Holmgrenia andina (Nutt.) W.L. Wagner & Hoch
Oenothera andina Nutt.