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|Jepson eFlora: Taxon page
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|Family: Ranunculaceae||View Description||Dichotomous Key|
|Genus: Thalictrum||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Thalictrum occidentale A. Gray
Habit: Plant 40--100 cm; dioecious. Leaf: basal and cauline, 6--40 cm; segments 11--35 mm, glabrous to finely glandular-puberulent. Inflorescence: panicle, bracts leaf-like proximally. Flower: sepals generally 4, 2--5 mm; stamens 15--30, filaments thread-like, anthers oblong-linear, acuminate. Fruit: (3)6--14, generally reflexed; body 4--6 mm, +- compressed laterally, sides obliquely narrowly ovate to narrowly fusiform, ribs generally 3, +- straight, beak 3--4.5 mm.
Ecology: Moist, shaded places, conifer forest; Elevation: < 200 m. Bioregional Distribution: n NCo, nw KR; Distribution Outside California: to British Columbia, Wyoming. Flowering Time: May--Jul
Synonyms: Thalictrum occidentale var. palousense H. St. John
eFlora Treatment Author: Bruce D. Parfitt & Dieter H. Wilken
Jepson Online Interchange
Previous taxon: Thalictrum fendleri var. polycarpum
Next taxon: Thalictrum sparsiflorum
Citation for this treatment: Bruce D. Parfitt & Dieter H. Wilken 2017. Thalictrum occidentale, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=46299, accessed on February 22, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 22, 2017.