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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

PODISTERA
Perennial herb, taprooted, low, fibrous at base, ± puberulent. Stem: 0. Leaf: basal; blades oblong to widely ovate, 1–2-pinnate, leaflets linear to round. Inflorescence: umbels compound, dense, head-like; bracts 0 or linear; involucel 1-sided; bractlets several, narrow or wide, generally partly fused; rays few, cylindric to flattened or winged; pedicels like rays. Flower: calyx lobes conspicuous; petals wide, yellow, ± purple, or white, tips narrowed. Fruit: oblong-ovate to ovate, ± compressed side-to-side, glabrous; ribs ± equal, thread-like to prominently corky, obtuse; oil tubes 2–several per rib-interval; fruit axis not obvious. Seed: compressed front-to-back; face flat to ± concave.
4 species: mountains of western North America. (Greek: solid foot, from compact habit)

P. nevadensis (A. Gray) S. Watson SIERRA PODISTERA
NATIVE
Compact cushion 2–5 cm, 2–5 dm diam. Leaf: petiole 3–15 mm, white scarious-sheathing; blade 3–10 mm, oblong to ovate, 1-pinnate, leaflets 1–6 mm, linear to lanceolate, entire, pointed. Inflorescence: peduncle 5–30 mm; bracts 0; bractlets 2–4 mm, ± = flowers and fruits, ovate, strongly fused into a cup; rays winged, short; pedicels 0–few, < fruit. Flower: corolla yellow. Fruit: 4–4.5 mm, oblong-ovate; ribs thread-like; oil tubes 3–4 per rib-interval.
2n=22. Unglaciated granitic gravel, scree, crevices; 3000–4000 m. n&c High Sierra Nevada, San Bernardino Mountains, White and Inyo Mountains. Jul–Sep [Online Interchange] {CNPS list}

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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 1 2014
Citation for this treatment: [Author of taxon treatment] 2013. Podistera, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=38924, accessed on Oct 1 2014

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click for enlargement Podistera nevadensis
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2005 Steve Matson

Geographic subdivisions indicated for the distribution of Podistera nevadensis 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.