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Tauschia hartwegii

Higher Taxonomy
Family: ApiaceaeView DescriptionDichotomous Key

Habit: 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.
Genera In Family: 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). Note: Mature fruit generally critical in identification, shape given in outline. Hydrocotyle moved to Araliaceae. Petroselinum crispum (Mill.) A.W. Hill is a waif.
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: TauschiaView DescriptionDichotomous Key

Habit: 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.
Species In Genus: +- 35 species: western North America to northern South America. Etymology: (I.F. Tausch, Czech botanist, 1793--1848)

Tauschia hartwegii (A. Gray) J.F. Macbr.
Habit: 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. Chromosomes: 2n=22.
Ecology: Chaparral, pine/oak woodland; Elevation: < 1800 m. Bioregional Distribution: NCoRI, CaRF, SNF, c&s SNH, ScV (Sutter Buttes), SnFrB, SCoR, SCo, WTR. Flowering Time: Mar--May
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
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Citation for this treatment: Lincoln Constance & Margriet Wetherwax Tauschia hartwegii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on November 19, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017, Jepson eFlora,, accessed on November 19, 2017.

Tauschia hartwegii
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© 2008 Keir Morse
Tauschia hartwegii
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© 2005 Aaron Schusteff
Tauschia hartwegii
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© 2007 Steve Matson
Tauschia hartwegii
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© 2008 Keir Morse
Tauschia hartwegii
click for enlargement
© 2008 Keir Morse
Tauschia hartwegii
click for enlargement
© 2005 Aaron Schusteff

More photos of Tauschia hartwegii in CalPhotos

Geographic subdivisions for Tauschia hartwegii:
NCoRI, CaRF, SNF, c&s SNH, ScV (Sutter Buttes), SnFrB, SCoR, SCo, WTR.
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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.