Flora of North America species comparison

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Balsamorhiza sericea

Balsamorhiza hispidula

silky balsamroot, silvery balsamroot

hairy balsamroot, hispid balsamroot
Habit Plants 10–30(–40) cm. Plants 6–40 cm.
Leaves

blades bright green, narrowly lance-elliptic to lanceolate, (6–)15–25(–40) × (3–)5–9+ cm (1–2-pinnatifid, primary lobes lanceolate to oblanceolate, 10–45 × 2–15 mm, secondary lobes usually divergent, antrorse), bases ± cuneate, ultimate margins usually entire (± revolute and/or thickened, often ciliate), apices acute to attenuate, faces ± hispidulous to hirtellous (gland-dotted as well; veins ± scabrous).
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.

campanulate to hemispheric 10–25 mm diam.
Ray laminae

15–20 mm (adaxially puberulous on veins).

15–40 mm (abaxially glabrous).
Outer phyllaries

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

lanceolate to linear, 12–20 mm, not surpassing inner, apices acute to attenuate (margins often ciliate).
Heads

borne singly.

borne singly.

Balsamorhiza sericea

Balsamorhiza hispidula
Phenology Flowering Apr–May. Flowering Apr–May.
Habitat Serpentine outcrops, among surface rocks, in crevices, hillsides, dry streamsides among cobbles Basalt scablands and desert-steppe areas, juniper and sagebrush scrublands
Elevation 400–1800 m (1300–5900 ft) 1800–2500 m (5900–8200 ft)
Distribution
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CO; ID; MT; NV; OR; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

Balsamorhiza sericea hybridizes with B. deltoidea.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Distribution of Balsamorhiza hispidula is highly disrupted in the southern part of its range.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 96. FNA vol. 21, p. 98.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Balsamorhiza 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
B. careyana, B. deltoidea, B. hookeri, B. incana, B. lanata, B. macrolepis, B. macrophylla, B. rosea, B. sagittata, B. sericea, B. serrata
Synonyms B. hookeri var. hispidula
Name authority W. A. Weber: Phytologia 50: 358. (1982) W. M. Sharp: Ann. Missouri Bot. Gard. 22: 137, fig. 3, plate 5. (1935)
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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