Fountain Thistle

Cirsium fontinale

Mount Hamilton Fountain Thistle

Cirsium fontinale var. campylon

Crystal Springs Fountain Thistle

Cirsium fontinale var. fontinale

San Luis Obispo Fountain Thistle

Cirsium fontinale var. obispoense

Suisun Thistle

Cirsium hydrophilum var. hydrophilum

Mount Tamalpais Thistle

Cirsium hydrophilum var. vaseyi

Cirsium inamoenum

Greene's Thistle

Cirsium inamoenum var. inamoenum

Mojave Thistle

Cirsium mohavense

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

Cuesta Ridge Thistle

Cirsium occidentale var. lucianum

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

Klamath Thistle

Cirsium remotifolium var. rivulare

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

La Graciosa Thistle

Cirsium scariosum var. loncholepis

Shasta Valley Thistle

Cirsium scariosum var. robustum

Elk Thistle

Cirsium scariosum var. scariosum

Wavyleaf Thistle

Cirsium undulatum

Sunflower

Helianthus annuus

Serpentine Sunflower

Helianthus bolanderi

California Sunflower

Helianthus californicus

Cusick's Sunflower

Helianthus cusickii

Serpentine Sunflower

Helianthus exilis

Slender Sunflower

Helianthus gracilentus

Newhall Sunflower

Helianthus inexpectatus

Showy Sunflower

Helianthus niveus

Algodones Dunes Sunflower

Helianthus niveus ssp. tephrodes

Nuttall's Sunflower

Helianthus nuttallii

Nuttall's Sunflower

Helianthus nuttallii ssp. nuttallii

Los Angeles Sunflower

Helianthus nuttallii ssp. parishii

Prairie Sunflower

Helianthus petiolaris

Gray Desert Sunflower

Helianthus petiolaris ssp. canescens

Drew's Silky Lupine

Lupinus adsurgens

Fleshy Lupine

Lupinus affinis

Sickle Keeled Lupine

Lupinus albicaulis

Sicklekeel Lupine

Lupinus albicaulis var. albicaulis

Shasta Lupine

Lupinus albicaulis var. shastensis

Silver Lupine

Lupinus albifrons

Abrams' Lupine

Lupinus albifrons var. abramsii

Silver Lupine

Lupinus albifrons var. albifrons

Silver Bush Lupine

Lupinus albifrons var. collinus

Douglas' Silver Lupine

Lupinus albifrons var. douglasii

Anderson's Lupine

Lupinus andersonii

Narrowflower Lupine

Lupinus angustiflorus

Anthony Peak Lupine

Lupinus antoninus

Summit Lupine

Lupinus apertus

Coastal Bush Lupine

Lupinus arboreus

San Mateo Tree Lupine

Lupinus arboreus var. eximius