Balsamorhiza serrata |
Balsamorhiza incana |
|
---|---|---|
serrate balsam root, serrated balsamroot, serrrate balsamroot, tooth balsamroot |
hoary balsamroot, woolly balsamroot |
|
Habit | Plants 10–20(–30) cm. | Plants 20–35(–70) cm. |
Basal leaves | blades pale green to gray-green, lanceolate or lance-ovate, 5–15(–20+) × 2–5(–10) cm (earliest sometimes, later seldom, pinnately lobed, mostly toward tips), bases usually cuneate to subtruncate, sometimes cordate, margins usually dentate to serrate, apices acute, faces hirsutulous to scabrous. |
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 | campanulate, 15–25 mm diam. |
hemispheric, 20–25(–30) mm. |
Ray laminae | (20–)30–40. |
20–40(–50+) mm. |
Outer phyllaries | lanceolate to lance-triangular, 10–22 mm, shorter than inner, apices acute to attenuate (margins ciliate). |
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 serrata |
Balsamorhiza incana |
|
Phenology | Flowering Apr–Jun. | Flowering May–Jun(–Jul). |
Habitat | Basaltic scablands, sagebrush scrub, openings in forests, meadow borders | Grassy meadows, dry, rocky sites, openings in conifer forests |
Elevation | (1000–)1400–1500 m ((3300–)4600–4900 ft) | 1200–2800 m (3900–9200 ft) |
Distribution |
CA; NV; OR; WA
|
ID; MT; OR; WA; WY
|
Discussion | Balsamorhiza serrata hybridizes with B. careyana. Leaves of the hybrids tend to be prostrate rather than erect. Most of the hybrids display the larger size of B. careyana and lack the pubescence of the heads; serrata-like plants never develop more than a single head nor do they have the pubescence of the cypselae. (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 | ||
Name authority | A. Nelson & J. F. Macbride: Bot. Gaz. 56: 479. (1913) | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 350. (1840) |
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