Large yellow primrose is a low villous, basal-leaved
annual with a leafless flowering stem and oblanceolate, deeply pinnatifid
leaves that are 1-2 divided into lanceolate to ovate lobes in turn further
lobed or toothed. The large, showy, yellow flowers age to reddish-orange.
The sepals are reflexed, and the petals are about 3/4" long
and quite deeply notched. There are eight stamens and a four-part
stigma, the lobes of which can be 1/4" long. This primrose
opens in the evening and remains open most of the following day. It
inhabits sandy hills, dune margins, dry plains and slopes of creosote
bush scrub, joshua tree woodlands and pinyon-juniper woodlands in the
Mojave and northern Colorado Deserts to an elevation of about 5000',
and blooms from March to May. These second picture was taken in
the East Mojave National Preserve, the first and third near Eureka Dunes.
Click here for Latin name derivations: 1) Oenothera
Pronunciation: ee-no-THEER-a pri-mi-VER-is boo-FO-nis.
Click here for Botanical