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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 herb, 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.Key to Lomatium
± 75 species: central and southern North America. (Greek: bordered, from prominent marginal fruit wing) [Constance & Ertter 1996 Madroño 43:515–521] Fruit wing width given as width of 1 wing, not both together. Lomatium roseanum Cronquist is reported from High Cascade Range, northern High Sierra Nevada, Modoc Plateau.
Unabridged references: [Schlessman 1984 Syst Bot Monogr 4:1–55; Matthias 1938 Ann Missouri Bot Gard 25:225–297]
Plant 1–5 dm; taproot or occasionally tubers slender or basally swollen; herbage gray, generally tomentose to densely short-hairy. Stem: short; base not fibrous. Leaf: petiole 1.5–7 cm; blade 2.5–15 cm, oblong to obovate, pinnately or ternate-pinnately dissected, segments 1–7 mm, linear to oblong, entire; cauline leaves like basal. Inflorescence: generally tomentose; peduncle 0.5–3 dm; involucel 1-sided; bractlets several, >= flowers, lance-linear to ovate, acute, ± fused, reflexing, not scarious; rays 5–25, 1–8.5 cm, spreading-ascending; pedicels 1–14 mm. Flower: corolla white, cream, or ± purple; ovary generally hairy. Fruit: 9–20 mm, lanceolate or oblong to narrowly elliptic, minutely hairy to ± glabrous; wings generally < body in width; oil tubes 1–3 per rib-interval.
2n=22. Generally serpentine rocky slopes in chaparral or woodland; 150–3000 m. North Coast, Klamath Ranges, Cascade Range, Sierra Nevada Foothills, Tehachapi Mountain Area, San Francisco Bay Area, South Coast; to British Columbia, central Canada, North Dakota, Utah. Apr–Jun [Online Interchange]
Unabridged synonyms: [Lomatium macrocarpum var. ellipticum (Torr. & A. Gray) Jeps.]
Previous taxon: Lomatium lucidum
Next taxon: Lomatium marginatum
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Aug 1 2015
Citation for this treatment: [Author of taxon treatment] 2013. Lomatium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=31433, accessed on Aug 1 2015
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© 1995 Saint Mary's College of California
|Geographic subdivisions indicated for the distribution of Lomatium macrocarpum|| 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 provide evidence for eFlora range revision or may have georeferencing or identification issues.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
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