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Key to families | Table of families and genera
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.
Annual, short-lived perennial herb, glabrous to puberulent. Stem: much-branched from base, 0.5–24 dm. Leaf: petiole 3–25 mm; leaflets generally 3. Inflorescence: raceme, terminal, 1–3 cm, dense, in fruit 4–20 cm; pedicels 5–10 mm. Flower: radial; sepals free, 1–2 mm, ± entire, green; petals 2.5–6.3 mm, elliptic, yellow, tapered to base, claw ± 0; stamens 8–14 mm, yellow; ovary 0.3–0.6 mm, generally exserted, lobes 2, ± free, each generally 1-ovuled, style 2–5.5 mm. Fruit: 2 nutlets; valves deciduous; receptacle stalk-like, reflexed; style elongate but not spine-like. Seed: 1(3) per nutlet.
2n=40. TOXIC but seldom eaten. Valuable honey plant. [Online Interchange]
Unabridged references: [Vanderpool et al. 1991 Amer J Bot 78:295–937]
1. Plant short-lived perennial herb; leaflets 3 below, 1 (leaf simple) above, linear-elliptic, 3–8 × longer than wide; sepals ovate, < 1.75 × longer than wide ..... subsp. palmeri
1' Plant annual; leaflets 3, ovate to obovate, 2–3 × longer than wide; sepals lanceolate, > 1.75 × longer than wide
2. Leaflet 2 × longer than wide; anthers 1.6–2.1 mm; San Joaquin Valley ..... subsp. californica
2' Leaflet 2–3 × longer than wide; anthers 0.9–1.2 mm; s Mojave Desert, n Sonoran Desert ..... subsp. refracta
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].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.