Opuntia echinocarpa

Opuntia echinocarpa

The silver cholla, Opuntia echinocarpa, is named for the halo of spines that cover its intricately branched arms. This cactus is found in dry habitats below 6,000 feet from Mono County south to Baja California. Photo courtesy of the UC Natural Reserve System.

spike mallow

Spike mallow

The spike mallow is common in Sierra meadows. The nectar is fluorescent, which may help attract pollinators such as solitary bees and skippers. Photo courtesy of the UC Natural Reserve System.

Aquilegia formosa flower

Aquilegia formosa

The Northwest crimson columbine (Aquilegia formosa) is one of three columbine species native to California. Image courtesy of the UC Natural Reserve System.

Aquilegia formosa flower

Aquilegia formosa

The Northwest crimson columbine (Aquilegia formosa) is one of three columbine species native to California. Image courtesy of the UC Natural Reserve System.

Pedicularis crenulata

Pedicularis crenulata

The meadow or scalloped-leaved lousewort, Pedicularis crenulata, belongs to the snapdragon family. Photo courtesy of the UC Natural Reserve System

Erigeron glaucus

The seaside daisy, Erigeron glaucus, is common along coastal bluffs and beaches. Photo courtesy of the UC Natural Reserve System.

Willow catkin

The willow catkin is native to California's streamside, riparian habitats. Photo courtesy of the UC Natural Reserve System

Sierra larkspur

Sierra larkspur

The mountain or Sierra larkspur, Delphinium glaucum, grows in moist mountainous environments, such as riverbanks and meadows, west of the Rockies. Photo courtesy of the UC Natural Reserve System.

Clarkia

The elegant clarkia is found in woodlands below 5,000 feet throughout much of California. It is named for William Clark of the Lewis and Clark Expedition. Photo courtesy of the UC Natural Reserve System