Jepson Herbarium
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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, from taproot or generally deep-seated tuber, glabrous to tomentose.
Stem: 0 or erect, simple or branched; base fibrous or not.
Leaf: blade oblong to triangular- ovate or obovate, ternately, pinnately, or ternate-pinnately dissected or compound, segments or leaflets thread-like to wide; old basal leaf sheaths fibrous-persistent or not.
Inflorescence: umbels compound, peduncled; bracts generally 0; bractlets generally present, 0 to conspicuous; rays, pedicels spreading to erect, generally webbed at base.
Flower: calyx lobes generally 0; petals wide, yellow, white, or purple, tips narrowed; ovary tip projection 0.
Fruit: linear to obovate, compressed front-to-back; marginal ribs widely to narrowly thin or thick-winged, others thread-like; oil tubes 1–several per rib-interval; fruit axis divided to base.
Seed: face flat to concave.
± 75 species: c&s North America. (Greek: bordered, from prominent marginal fruit wing) [Constance & Ertter 1996 Madroño 43:515–521] Fr wing width given as width of 1 wing, not both together. Lomatium roseanum Cronquist is reported from CaRH, n SNH, MP.
Unabridged references: [Schlessman 1984 Syst Bot Monogr 4:1–55; Matthias 1938 Ann Missouri Bot Gard 25:225–297]

Plant 1.5–10 dm, generally finely soft-hairy or puberulent; taproot slender to massive.
Stem: prominent.
Leaf: petiole 7–20 cm, sheathing ± to middle; blade 7–20 cm, oblong-ovate to triangular- ovate or obovate, 1–2-ternate- pinnate, leaflets 1.5–20 cm, linear to lance- ovate, generally entire; cauline leaves 0 or generally sheathing throughout.
Inflorescence: peduncle generally 1–4.5 dm, spreading to erect; bractlets (0)3–8, 1–5 mm, thread-like to lance- linear, ± scarious; rays 5–20, 2–10 cm, spreading or spreading- ascending, unequal; pedicels 1–10 mm.
Flower: corolla yellow; ovary glabrous to densely puberulent.
Fruit: 6–22 mm, oblong, puberulent or glabrous; wings generally < body in width. Lomatium triternatum var. anomalum (J.M. Coult. & Rose) Mathias evidently not in CA. Varieties poorly defined. Variable in GB, adjacent areas. [Online Interchange]
Unabridged note: Expanded author citation: Lomatium triternatum var. anomalum (M.E. Jones ex J.M. Coult. & Rose) Mathias.

Flower: ovary glabrous.
2n=22,44. Open serpentine ridges, scrub, pine forest; 200–2000 m. Klamath Ranges, North Coast Ranges, Warner Mountains;

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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.