Jepson Herbarium
		University of California, Berkeley

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Annual to perennial herb [ shrub, tree], generally from taproot.
Stem: generally ± scapose, generally ribbed, hollow.
Leaf: basal and generally cauline, generally alternate; stipules generally 0; petiole base generally sheathing stem; blade generally much dissected, occasionally compound.
Inflorescence: umbel or head, simple or compound, generally peduncled; bracts present in involucres or 0; bractlets generally present in " involucels".
Flower: many, small, generally bisexual (or some staminate), generally radial (or outer bilateral); calyx 0 or lobes 5, small; 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 at tip subtending 2 free styles.
Fruit: 2 dry, 1-seeded halves (= mericarps), separating from each other but generally ± persistent to central axis; ribs on halves 5, 2 marginal, 3 to back; oil tubes 1–several per interval between ribs.
300 genera, 3000 species: ± worldwide, especially temperate; many cultivated for food or spice (e.g., Carum, caraway; Daucus; Petroselinum); Bupleurum lancifolium Hornem. is historical garden weed; some toxic (e.g., Conium). Mature fruit generally critical in identification, shape given in outline. Hydrocotyle moved to Araliaceae. Petroselinum crispum (Mill.) A.W. Hill is a waif. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Apiaceae

Perennial, glabrous, generally glaucous; roots tuberous, single or clustered, or clustered- fibrous.
Stem: erect, branched.
Leaf: blade lanceolate to triangular- ovate, generally 1–2-ternate- pinnate or 1–2-pinnately or ternate-pinnately dissected, leaflets or segments generally linear to lance- linear.
Inflorescence: umbels compound; bracts 0–many, conspicuous and reflexed or not; bractlets several to many, narrow, ± scarious; rays, pedicels few to many, generally spreading- ascending; 2° umbels generally convex distally.
Flower: calyx lobes evident; petals generally obovate, white, tips narrowed.
Fruit: linear-oblong, ± compressed side-to-side or not at all, glabrous; ribs ± equal, thread-like to prominent, not winged; oil tubes 1–several per rib-interval; fruit axis divided to base.
Seed: face flat to grooved.
± 12 species: generally w Am. (Greek: around the neck, from involucre) [Chuang & Constance 1969 Univ Calif Publ Bot 55:1–74] Roots, basal leaves needed for identification.

Plant 5–15 dm, generally branched; roots tuberous, 2–5-clustered, 5–12 cm, cylindric.
Leaf: basal petiole 2–6 cm; basal blade 15–45 cm, ± ovate, 1–2- ternate-pinnately dissected, segments flattened, terminal 3–15 cm, lance- linear, entire, lateral 3–30 mm, 5–10 mm wide, ovate, flattened, pinnately lobed; cauline leaves reduced.
Inflorescence: peduncle 2–20 cm: bracts 5–8, 2–5 mm, lance- ovate, scarious-margined, acuminate; bractlets 10–12, 1–4 mm, ± ovate, scarious-margined; rays generally 8–12, 3–8 cm, ± equal, spreading- ascending; pedicels 5–10 mm; 2° umbels 18–28-flowered.
Flower: petals 1-veined; styles 1–1.5 mm.
Fruit: 5–8 mm, ± oblong; ribs thread-like; oil tube 1 per rib-interval.
2n=44. Damp soil by streams; 300–1250 m. c Sierra Nevada Foothills, San Francisco Bay Area, South Coast Ranges.

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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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Bioregions in which taxon occurs	Red area (if present) is the part of the bioregion lying between the upper and lower elevation limits of the taxon; markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may have georeferencing or identification issues.
Chart based on elevation range in Manual and elevations and coordinates of CCH records. Data provided by the participants of the Consortium of California Herbaria. Note: About half of the CCH records include both elevation and coordinates.	Map made in collaboration with Scott Loarie. Data provided by the participants of the Consortium of California Herbaria. View all CCH records   CCH collections by month Duplicates counted once; synonyms included. Species do not include records of infraspecific taxa. Blue line denotes Manual flowering time.