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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 1.2–3.5 dm; taproot slender; herbage ± gray, dull, ± fleshy; hairs ± 0 to dense, fine, soft. Stem: short, leaves crowded at base. Leaf: petiole 3–6 cm, sheathing throughout, scarious-margined; blade 5–10 cm, oblong to ovate, ternate-pinnately dissected, segments 3–7 mm, linear to oblong, obtuse to ± acute; cauline leaves like basal. Inflorescence: glabrous to finely soft-hairy; peduncle 0.7–3 dm, spreading-ascending; bractlets 5–10, lance-linear to obovate, fused into 1-sided, scarious, veiny, irregularly cut cup >= flowers; rays 10–25, 0.5–7.5 cm, unequal, spreading-ascending, ± webbed; pedicels 3–8 mm. Flower: corolla light yellow. Fruit: 9–13 mm, oblong to oblong-ovate, glabrous; wings < body in width; oil tubes 1–several per rib-interval.
Rocky places, sagebrush, pine woodland; 1500–2300 m. High Cascade Range, n High Sierra Nevada, Great Basin Floristic Province; western Nevada. Extremely variable in hairiness. May–Jun [Online Interchange]
Unabridged synonyms: [Lomatium plummerae var. austiniae (J.M. Coult. & Rose) Mathias; Lomatium plummerae var. sonnei (J.M. Coult. & Rose) Jeps.]
Previous taxon: Lomatium piperi
Next taxon: Lomatium ravenii
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 30 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=31450, accessed on May 30 2015
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© 1993 Gary A. Monroe
|Geographic subdivisions indicated for the distribution of Lomatium plummerae|| 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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