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|Jepson eFlora: Taxon page
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|Family: Apiaceae (Umbelliferae)||View Description||Dichotomous Key|
|Genus: Sphenosciadium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Sphenosciadium capitellatum A. Gray
Habit: Perennial herb, +- scabrous; root tuberous. Stem: erect, 5--18 dm, generally branched, leafy. Leaf: petiole 1--4 dm; blade 1--4 dm, oblong to ovate, 1--2-pinnate or ternate-pinnate, leaflets 1--12 cm, generally +- lanceolate, acute, sparsely toothed to irregularly cut or pinnately lobed; cauline leaf sheaths enlarged. Inflorescence: umbels compound, tomentose; peduncle 7--40 cm; bracts 0; bractlets many, linear, bristle-like; rays 4--18, 1.5--10 cm, ascending to reflexed; pedicels reduced to a disk; 2° umbels head-like, spheric. Flower: calyx lobes 0; petals obovate, white or +- purple, tips narrowed; styles slender. Fruit: 5--8 mm, wedge-shaped-obovate, compressed front-to-back, tomentose; ribs unequally winged, marginal wider than others; oil tubes per rib-interval 1; fruit axis divided to base. Seed: face +- flat. Chromosomes: 2n=22.
Ecology: Wet meadows, streamsides, lakeshores; generally higher elevations; Elevation: < 3500 m. Bioregional Distribution: NCoRI, CaR, SNH, TR, PR, GB; Distribution Outside California: to Oregon, Idaho, Nevada, Baja California. Toxicity: TOXIC to livestock, but rarely eaten. Flowering Time: Jul--Aug
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
Jepson Online Interchange
Previous taxon: Sphenosciadium
Next taxon: Tauschia
Citation for this treatment: Lincoln Constance & Margriet Wetherwax 2017. Sphenosciadium capitellatum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=45173, accessed on January 18, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on January 18, 2017.