Jepson eFlora
Key to families | Table of families and genera

Key to Holocarpha

View taxon page for Holocarpha

1. Anthers yellow to ± brown

2. Stem notably stalked-glandular; phyllaries each with 25–50 pit-gland-tipped outgrowths and minutely sessile- or stalked-glandular and puberulent or minutely bristly; involucre bell-shaped to ± spheric; heads 1 or in panicle- or raceme-like clusters ..... H. heermannii

2' Stem resinous distally, not notably stalked-glandular; phyllaries each with (0)5–15(20) pit-gland-tipped outgrowths and generally glabrous or minutely sessile- or stalked-glandular (bristly); involucre ± obconic to ± spheric; heads in flat-topped or panicle-like clusters ..... H. obconica

1' Anthers ± red to dark purple

3. Heads 1, in tight groups, or in spike-like clusters of tight groups; ray flowers 8–16; disk flowers 40–90 ..... H. macradenia

3' Heads 1, at ends of branches, or in ± raceme- to spike-like clusters; ray flowers 3–8; disk flowers 9–25+ ..... H. virgata

4. Stem branches ± upcurved, ± pliable; peduncles 0–5(15) cm ..... subsp. elongata

4' Stem branches ± straight, ± rigid; peduncles 0–5+ cm ..... subsp. virgata


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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