|Bottle Evening Primrose (Oenothera primiveris)|
DESCRIPTION: Also called Yellow Desert Primrose. Annual to 4". Flowers are yellow, with four, notched petals to 2" wide. Leaves are simple, pinnately lobed (like dandilion), basal, to 4" long. Onagraceae (Evening Primrose) Family.
NATURAL HISTORY: Flowers bloom late winter to early spring.