Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Lincoln Constance

Annual, biennial, perennial herb (rarely shrub, tree), often from taproot
Stem often ± scapose, generally ribbed, hollow
Leaves basal and generally some cauline, generally alternate; stipules generally 0; petiole base generally sheathing stem; blade generally much dissected, sometimes compound
Inflorescence: umbel or head, simple or compound, generally peduncled; bracts present (in involucres) or not; bractlets generally present (in involucels)
Flowers many, small, generally bisexual (or some staminate), generally radial (or outer bilateral); calyx 0 or lobes 5, small, atop ovary; petals 5, free, generally ovate or spoon-shaped, generally incurved at tips, generally ± ephemeral; stamens 5; pistil 1, ovary inferior, 2-chambered, generally with a ± conic, persistent projection or platform on top subtending 2 free styles
Fruit: 2 dry, 1-seeded halves that separate from each other but generally remain attached for some time to a central axis; ribs on each half 5, 2 marginal and 3 on back; oil tubes 1–several per interval between ribs
Genera in family: 300 genera, 3,000 species: ± worldwide, especially temp; many cultivated for food or spice (e.g., Carum, caraway; Daucus; Petroselinum); some highly toxic (e.g., Conium). Underground structures here called roots, but true nature remains problematic. Mature fruit generally critical in identification; shapes generally given in outline, followed by shape in X -section of 2 fruit halves together.


Perennial, taprooted, cushion-forming, generally coarsely hairy or tomentose
Stem 0
Leaves: lowest bladeless sheaths; upper blades narrowly ovate to round, pinnately or ternately dissected, segments lanceolate or oblong
Inflorescence: umbels compound, head-like, spheric or hemispheric; peduncles spreading; bracts 0; involucel 1-sided, bractlets fused to nearly free; rays few–many, spreading to spreading-ascending; fertile pedicels very short, sterile > fruit
Flower bisexual, staminate, or sterile; calyx lobes conspicuous or not; petals spoon-shaped or oblanceolate, generally white or yellow, or becoming purple, early deciduous, tips narrowed; projection atop ovary 0
Fruit ovate to round, slightly compressed side-to-side or cylindric, hairy; ribs subequal, thread-like; oil tubes per rib-interval several; fruit axis divided to base
Seed: face deeply grooved
Species in genus: 3 species: high mtns of CA-FP
Etymology: (Greek: mountain dwarf)
Reference: [Shevock & Norris 1981 Fremontia 9:22–25]


O. vestita (S. Watson) Jeps.


Plant 4–15 cm, white-tomentose
Leaf: bladeless sheaths 1.5–3 cm; petiole 2–10 cm; blade 1.5–5 cm, ovate to round, segments 3–10 mm, oblong
Inflorescence: umbels 2–5 cm, hemispheric, appearing ± with leaf blades; peduncles 4–12 cm, spreading; bractlets nearly free; rays 10–25, 1–2 cm, not scarious-winged, not webbed; sterile pedicels 10–15 mm
Flower bisexual or staminate; calyx lobes inconspicuous, obscured by hairs; corolla yellow or maroon; anthers yellow
Fruit 5–6 mm, 3–4 mm wide, tomentose
Chromosomes: 2n=22
Ecology: UNCOMMON. Ridge tops
Elevation: 2410–3500 m.
Bioregional distribution: San Gabriel Mountains, San Bernardino Mountains.
See the CNPS Inventory for information about endangerment and rarity.
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