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Balsamorhiza rosea

rosy balsamroot

Habit Plants 6–10(–30) cm.
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.

Ray laminae

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

Outer phyllaries

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

Heads

usually borne singly.

2n

= 38.

Balsamorhiza rosea

Phenology Flowering Apr–May.
Habitat Dry hills
Elevation 300–400 m (1000–1300 ft)
Distribution
from FNA
OR; WA
[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.)

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