Flora of North America species comparison

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Balsamorhiza rosea

Balsamorhiza hispidula
Balsamorhiza rosea

rosy balsamroot

hairy balsamroot, hispid balsamroot
Habit Plants 6–10(–30) 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 gray-green, oblong to lance-ovate, 3–10(–20) × 2–5 cm (rarely pinnately lobed), bases weakly cordate or truncate, margins crenate to serrate, apices rounded to acute, faces finely strigose to moderately scabrous (usually gland-dotted as well).

Involucres

hemispheric, 18–20 mm diam.

campanulate to hemispheric 10–25 mm diam.
Ray laminae

(becoming brick-red, often drying to pink or rose, and chartaceous) (8–)15(–25) mm (hispidulous abaxially; cypselae strigose).

15–40 mm (abaxially glabrous).
Outer phyllaries

deltate or ovate to lanceolate, 8–12 mm, not surpassing inner.

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

usually borne singly.

borne singly.
2n

= 38.

Balsamorhiza rosea

Balsamorhiza hispidula
Phenology Flowering Apr–May. Flowering Apr–May.
Habitat Dry hills Basalt scablands and desert-steppe areas, juniper and sagebrush scrublands
Elevation 300–400 m (1000–1300 ft) 1800–2500 m (5900–8200 ft)
Distribution
from FNA
OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; CO; ID; MT; NV; OR; UT; WY
[WildflowerSearch map]
[BONAP county map]
Discussion

In a hybrid swarm involving Balsamorhiza rosea and B. careyana, B. rosea remains relatively uncontaminated; the dominance among the hybrids appears to lie with B. careyana. A record of a hybrid between B. rosea and B. careyana from the Spokane area is doubtful.

(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. sagittata, B. sericea, 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. rosea B. hookeri var. hispidula
Name authority A. Nelson & J. F. Macbride: Bot. Gaz. 56: 478. (1913) 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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