Pacific Mountain Onion

Allium validum

Yosemite Onion

Allium yosemitense

Rose Thistle

Cirsium andersonii

Franciscan Thistle

Cirsium andrewsii

Indian Thistle

Cirsium brevistylum

Slough Thistle

Cirsium crassicaule

Peregrine Thistle

Cirsium cymosum

Peregrine Thistle

Cirsium cymosum var. cymosum

Douglas' Thistle

Cirsium douglasii

Douglas' Thistle

Cirsium douglasii var. breweri

Douglas' Thistle

Cirsium douglasii var. douglasii

Fountain Thistle

Cirsium fontinale

Mount Hamilton Fountain Thistle

Cirsium fontinale var. campylon

Crystal Springs Fountain Thistle

Cirsium fontinale var. fontinale

Suisun Thistle

Cirsium hydrophilum

Suisun Thistle

Cirsium hydrophilum var. hydrophilum

Mount Tamalpais Thistle

Cirsium hydrophilum var. vaseyi

Cirsium inamoenum

Mojave Thistle

Cirsium mohavense

Desert Thistle

Cirsium neomexicanum

Cobweb Thistle

Cirsium occidentale

California Thistle

Cirsium occidentale var. californicum

Snowy Thistle

Cirsium occidentale var. candidissimum

Compact Cobwebby Thistle

Cirsium occidentale var. compactum

Coulter's Thistle

Cirsium occidentale var. coulteri

Cobwebby Thistle

Cirsium occidentale var. occidentale

Venus Thistle

Cirsium occidentale var. venustum

Brownie Thistle

Cirsium quercetorum

Fewleaf Thistle

Cirsium remotifolium

Pacific Fringed Thistle

Cirsium remotifolium var. odontolepis

Surf Thistle

Cirsium rhothophilum

Meadow Thistle

Cirsium scariosum

Dinnerplate Thistle

Cirsium scariosum var. americanum

Southern Meadow Thistle

Cirsium scariosum var. citrinum

Rosette Thistle

Cirsium scariosum var. congdonii

Wavyleaf Thistle

Cirsium undulatum

Rattlesnake Weed

Daucus pusillus

Sunflower

Helianthus annuus

Serpentine Sunflower

Helianthus bolanderi

California Sunflower

Helianthus californicus

Serpentine Sunflower

Helianthus exilis

Slender Sunflower

Helianthus gracilentus

Showy Sunflower

Helianthus niveus

Nuttall's Sunflower

Helianthus nuttallii

Nuttall's Sunflower

Helianthus nuttallii ssp. nuttallii

Los Angeles Sunflower

Helianthus nuttallii ssp. parishii

Prairie Sunflower

Helianthus petiolaris

Arizona Barley

Hordeum arizonicum

Meadow Barley

Hordeum brachyantherum

Meadow Barley

Hordeum brachyantherum ssp. brachyantherum

California Meadow Barley

Hordeum brachyantherum ssp. californicum

Low Barley

Hordeum depressum

Bobtail Barley

Hordeum intercedens

Foxtail Barley

Hordeum jubatum

Foxtail Barley

Hordeum jubatum ssp. jubatum

Tinker's Penny

Hypericum anagalloides

Gold-wire

Hypericum concinnum

Scouler's St. Johnswort

Hypericum scouleri

Tall Blue Lettuce

Lactuca biennis

Prairie Flax

Linum lewisii