Category: Wild flowers

Desert Primrose (Oenothera deltoides)

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Desert Primrose photographed in Anza Burego, CA
Desert Primrose photographed in Anza Burego, CA

The Desert Primrose ( Oenothera deltoides ) is a small bush-like flowering planet with delicate white flowers.  The primrose ranges from 2″ to 18″ high and frequents the sand dunes of the Mojave, Anza Burego and Sonoran Deserts as well as the Great Basin. This white flowered is common in most of the south western states of the United States.

The plants themselves may cluster and spread up to about 40 inches wide when healthy. They will grow profusely in abundant spring rains offer the water they need to sustain growth. The long tongue of the white-lined sphynx moth is known to pollinate this flower.

The pretty white flower blooms from January through May. During which the 2 – 3″ delicate bloom opens in the evening and closes mid morning.  The small oval shaped branches are pale green in color grow to about 4 inches in length.

The Primrose is also known by the following common names:

  • Basket Evening Primrose
  • Birdcage Evening Primrose
  • Devil’s Lantern
  • Lion-in-a-Cage

The delicate flower above was photographed with the light of the setting sun and the back country of Anza Burrego, CA. The year, the desert flower was inundated with these plants and a white covered the sands of the desert floor.

Owl’s Clover (Castilleja exserta)

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Owls Clover (Castilleja exserta) is a small flowering plant which can grow about 1 foot tall.   The Owl’s Clover is a native plant to California, Arizona, New Mexico and the Northwestern areas of Mexico.  Like other Castilleja plants, which also includes the Indian Paintbrushes, the Owl’s Clover is hemiparasitic which means that it obtains its nutrients from the roots of other plants.

Owls Clover photographed in the California Poppy Reserve - Photo by James L Rathbun
Owls Clover photographed in the California Poppy Reserve – Photo by James L Rathbun

The Owls Cover blooms from March to May and may be found at elevations from 2000 ft to 3000 ft. The plant ranges in height from 4 to 18 inches in height. The underdeveloped, hairy stemmed leaves are threaded in appearance because they are not needed for nutrients or photosynthesis. Rather, the roots of this plant will growth into the root structures of other plants around it, stealing the nutrients from it.

The thin, erect bracts are usually tipped in the same color. This will give the flower a dual tone color and the appearance a paintbrush dipped in paint. This is the source of the the paintbrush common name of other plants in this genus.

The seeds of the Owl’s clover were harvested and utilized as a food source by the indigenous peoples of California.