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APIACEAE (Umbelliferae) CARROT FAMILY

Lincoln Constance & Margriet Wetherwax, except as noted

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

TAUSCHIA
Perennial herb, taprooted or roots tuberous; glabrous to hairy. Stem: 0 or short. Leaf: blade oblong to obovate, 1–2-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 few to many, ascending to reflexed, generally few fertile. Flower: calyx lobes occasionally 0; petals wide, yellow, tips narrowed; styles slender; ovary tip projection inconspicuous. Fruit: oblong to round, ± compressed side-to-side, glabrous; ribs prominent to thread-like, ± equal, unwinged; oil tubes several per rib-interval; fruit axis generally divided ± to base. Seed: face generally grooved or concave.
± 35 species: western North America to northern South America. (I.F. Tausch, Czech botanist, 1793–1848)

Key to Tauschia

T. hartwegii (A. Gray) J.F. Macbr.
NATIVE
Plant 3–10 dm, minutely scabrous. Stem: 0. Leaf: petiole 5–25 cm; blade 12–24 cm, oblong to widely ovate, 1–2-ternate-pinnate, leaflets 25–60 mm, oblong to ovate, coarsely serrate, generally lobed. Inflorescence: peduncle 2.5–8 dm; bractlets several, 5–12 mm, ± lanceolate, entire, reflexed, some ± > flowers, fruits; rays 10–30, 2–12 cm, unequal; pedicel 2–7 mm. Flower: calyx lobes minute; corolla yellow; styles slender. Fruit: 4–7 mm, ± round; ribs thread-like; oil tubes 3–5 per rib-interval; fruit axis divided to base.
2n=22. Chaparral, pine/oak woodland; < 1800 m. Inner North Coast Ranges, Cascade Range Foothills, Sierra Nevada Foothills, c&s High Sierra Nevada, Sacramento Valley (Sutter Buttes), San Francisco Bay Area, South Coast Ranges, South Coast, Western Transverse Ranges. Mar–May [Online Interchange]

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Next taxon: Tauschia howellii

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Oct 24 2014
Citation for this treatment: [Author of taxon treatment] 2013. Tauschia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=46097, accessed on Oct 24 2014

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click for enlargement Tauschia hartwegii
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1995 Lee Dittmann

Geographic subdivisions indicated for the distribution of Tauschia hartwegii 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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map of distribution 1
(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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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.