Balsamorhiza rosea |
Balsamorhiza lanata |
|
---|---|---|
rosy balsamroot |
lanate balsamroot, woolly balsamroot, Yreka balsamroot |
|
Habit | Plants 6–10(–30) cm. | Plants 10–20(–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). |
blades white to grayish, lanceolate to linear-oblong, 10–20 × 3–6(–8) cm (1–2-pinnatifid, primary lobes lance-linear to oblong, mostly 5–40 × 1–10 mm, secondary lobes or teeth antrorse, divergent), bases cuneate to truncate, ultimate margins mostly entire (± revolute), apices rounded to acute, faces densely lanate-tomentose to villous. |
Involucres | hemispheric, 18–20 mm diam. |
± hemispheric, 12–20 mm diam. |
Ray laminae | (becoming brick-red, often drying to pink or rose, and chartaceous) (8–)15(–25) mm (hispidulous abaxially; cypselae strigose). |
(10–)15–20 mm (abaxially puberulent or glabrous). |
Outer phyllaries | deltate or ovate to lanceolate, 8–12 mm, not surpassing inner. |
lanceolate to linear, 10–20 mm, sometimes surpassing inner, apices acute to attenuate. |
Heads | usually borne singly. |
borne singly. |
2n | = 38. |
|
Balsamorhiza rosea |
Balsamorhiza lanata |
|
Phenology | Flowering Apr–May. | Flowering Apr–May(–Jun). |
Habitat | Dry hills | Roadsides, grassy slopes |
Elevation | 300–400 m [1000–1300 ft] | 700–1500 m [2300–4900 ft] |
Distribution |
OR; WA
|
CA; OR |
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.) |
Of conservation concern. Balsamorhiza lanata is known from a relatively restricted area in northern California and southern Oregon. No hybrids between it and other species have been noted. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 96. | FNA vol. 21, p. 97. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | B. hookeri var. rosea | B. hookeri var. lanata |
Name authority | A. Nelson & J. F. Macbride: Bot. Gaz. 56: 478. (1913) | (W. M. Sharp) W. A. Weber: Phytologia 85: 20. (1999) |
Web links |