|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
previous taxon |
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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 1several 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 or roots tuberous, glabrous to hairy
Stem 0 or low
Leaf: blade oblong to obovate, 12-pinnate or -ternate, leaflets wide, margins entire to pinnately lobed
Inflorescence: umbels compound, terminal; peduncle generally > leaf; bracts generally 0; involucel 1-sided; bractlets inconspicuous to leaf-like; rays, pedicels fewmany, ascending to reflexed, generally few fertile
Flower: calyx lobes evident to 0; petals wide, yellow, tips narrowed; styles short to slender; projection atop ovary inconspicuous
Fruit oblong to round, ± compressed side-to-side, glabrous; ribs prominent to thread-like, subequal, unwinged; oil tubes per rib-interval several; fruit axis generally divided ± to base
Seed: face generally grooved or concave
Etymology: (I.F. Tausch, Czech botanist, 17931848)
Species in genus: ± 35 species: w North America., C.Am, n South America.
Plant 24 dm, glabrousSee the CNPS Inventory for information about endangerment and rarity.
Stem 0 or generally < leaves
Leaf: petiole 212 cm; blade 612 cm, ovate to round, 2-ternate or ternate-pinnate, leaflets 1017 mm, ovate to round, coarsely serrate or lobed
Inflorescence: peduncle 24 dm; bractlets several, 17 mm, lanceolate; rays 512, 16 cm, very unequal; pedicels 13 mm
Flower: calyx lobes minute; corolla yellow; styles slender
Fruit 23 mm, nearly round; ribs thread-like; oil tubes per rib-interval 23; fruit axis divided to base or nearly so
Ecology: UNCOMMON. Gravelly, often serpentine flats in coniferous forest
Elevation: 801700 m.
Bioregional distribution: North Coast
Distribution outside California: s Oregon