Flora of North America species comparison

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Balsamorhiza sericea

silky balsamroot, silvery balsamroot
Habit Plants 10–30(–40) cm.
Basal leaves

blades silvery, lanceolate or lance-ovate, 9–30 × 2–7 cm (1-pinnatifid, lobes oblong to oblanceolate, 5–35 × 3–17 mm), bases cuneate, ultimate margins usually entire (plane or weakly revolute, obscurely, if at all, ciliate), apices rounded to acute, faces densely sericeous.
Involucres

campanulate to hemispheric, 11–20+ mm diam.
Ray laminae

15–20 mm (adaxially puberulous on veins).
Outer phyllaries

broadly ovate to triangular-ovate, 12–20 mm, slightly surpassing inner, apices acuminate to attenuate (margins not ciliate).
Heads

borne singly.

Balsamorhiza sericea
Phenology Flowering Apr–May.
Habitat Serpentine outcrops, among surface rocks, in crevices, hillsides, dry streamsides among cobbles
Elevation 400–1800 m (1300–5900 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Balsamorhiza sericea hybridizes with B. deltoidea.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 96.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Balsamorhiza
Sibling taxa
B. careyana, B. deltoidea, B. hispidula, B. hookeri, B. incana, B. lanata, B. macrolepis, B. macrophylla, B. rosea, B. sagittata, B. serrata
Name authority W. A. Weber: Phytologia 50: 358. (1982)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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