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Key to families | Table of families and genera
This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press.
Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Perennial or subshrub, evergreen; hairs generally in stellate clumps, rarely glandular (except inflorescence), sparse to dense.
Stem: generally erect, ± broom-like.
Leaf: basal 0; cauline generally alternate [ opposite], generally linear to lanceolate or oblanceolate, ± sessile.
Inflorescence: raceme- or panicle-like.
Flower: sepals 5, outer 2 generally narrower; petals yellow; stamens 5–many; style < 2 mm, stigma ± hemispheric.
Fruit: valves generally 3.
± 120 species: ± range of family. (Greek: sun flower) CA species especially abundant after fire, here retained in Helianthemum (polyphyletic) in lieu of combination in Crocanthemum (or Husonia) for Helianthemum greenei.
Unabridged note: Based on molecular and other data (as yet unpublished, by Jenny Arrington & Paul Manos) Helianthemum is polyphyletic; CA taxa are more closely related to Crocanthemum and Hudsonia than to Helianthemum; and although New World members are often now treated in Crocanthemum, they here are retained for now in Helianthemum because the relationship of California taxa to Crocanthemum versus Hudsonia remains uncertain and a combination has yet to be made in Crocanthemum (or Hudsonia) for Helianthemum greenei.
1. Infl hairs dense, generally 0.5–0.7 mm, most glandular, dark red, fewer nonglandular, white; outer 2 sepals lanceolate ..... H. greenei
1' Infl hairs sparse to dense, generally < 0.5 mm, most nonglandular, white, fewer glandular, dark red; outer 2 sepals linear ..... H. scoparium
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [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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