Leaves thinly white-tomentose abaxially, glabrous adaxially; flowers, involucres generally glabrous; plant generally decumbent; Central Coast, South Coast Ranges, South Coast,
Channel Islands (Santa Catalina Island), Western Transverse Ranges, San Bernardino Mountains, Peninsular Ranges, Mojave Desert (se edge) ..... var. fasciculatum
Leaves, flowers, involucres hairy, if ± glabrous then plant of deserts; plant erect to rounded; California Floristic Province, East of Sierra Nevada, D
Leaves light yellow-green, glabrous or ± so adaxially; involucres, flowers glabrous or occasionally hairy; Desert ..... var. flavoviride
Leaves dark green or ± gray, generally hairy adaxially; involucres, flowers hairy; California Floristic Province, East of Sierra Nevada, D
Inflorescence open, mostly cyme-like; leaves densely white-tomentose abaxially, less so to green, sparsely tomentose adaxially, margins generally tightly rolled under;
Central Western California, Southwestern California, occasionally Northwestern California, Desert ..... var. foliolosum
Inflorescence head- to umbel-like (or cyme-like); leaves gray-hairy on both surfaces or densely gray-tomentose abaxially, gray-hairy adaxially, margins not or occasionally
rolled under; San Joaquin Valley, Central Coast, Outer South Coast Ranges, s Sierra Nevada, Inner South Coast Ranges, e South Coast, Transverse Ranges,
e Peninsular Ranges, San Jacinto Mountains, East of Sierra Nevada, Desert ..... var. polifolium
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