Balsamorhiza rosea |
Balsamorhiza incana |
|
---|---|---|
rosy balsamroot |
hoary balsamroot, woolly balsamroot |
|
Habit | Plants 6–10(–30) cm. | Plants 20–35(–70) 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). |
blades white to grayish, lance-ovate to oblong, 10–45 × 3–7(–10) cm (1-pinnatifid, lobes ovate to lanceolate, 20–50 × 5–25 mm), bases broadly cuneate to truncate, margins entire or serrate (plane, not distinctly ciliate), apices obtuse, faces usually densely, sometimes sparsely, tomentose. |
Involucres | hemispheric, 18–20 mm diam. |
hemispheric, 20–25(–30) mm. |
Ray laminae | (becoming brick-red, often drying to pink or rose, and chartaceous) (8–)15(–25) mm (hispidulous abaxially; cypselae strigose). |
20–40(–50+) mm. |
Outer phyllaries | deltate or ovate to lanceolate, 8–12 mm, not surpassing inner. |
ovate to lanceolate or linear, 15–20 mm, shorter than inner, apices acute to attenuate (margins ± ciliate). |
Heads | usually borne singly. |
usually borne singly. |
2n | = 38. |
= 38. |
Balsamorhiza rosea |
Balsamorhiza incana |
|
Phenology | Flowering Apr–May. | Flowering May–Jun(–Jul). |
Habitat | Dry hills | Grassy meadows, dry, rocky sites, openings in conifer forests |
Elevation | 300–400 m (1000–1300 ft) | 1200–2800 m (3900–9200 ft) |
Distribution |
OR; WA
|
ID; MT; OR; WA; WY
|
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.) |
Balsamorhiza incana hybridizes with B. sagittata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 96. | FNA vol. 21, p. 96. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Balsamorhiza | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Balsamorhiza |
Sibling taxa | ||
Synonyms | B. hookeri var. rosea | |
Name authority | A. Nelson & J. F. Macbride: Bot. Gaz. 56: 478. (1913) | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 350. (1840) |
Web links |