Balsamorhiza hispidula |
Balsamorhiza serrata |
|
---|---|---|
hairy balsamroot, hispid balsamroot |
serrate balsam root, serrated balsamroot, serrrate balsamroot, tooth balsamroot |
|
Habit | Plants 6–40 cm. | Plants 10–20(–30) 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). |
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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. |
|
Involucres | campanulate to hemispheric 10–25 mm diam. |
campanulate, 15–25 mm diam. |
Ray laminae | 15–40 mm (abaxially glabrous). |
(20–)30–40. |
Outer phyllaries | lanceolate to linear, 12–20 mm, not surpassing inner, apices acute to attenuate (margins often ciliate). |
lanceolate to lance-triangular, 10–22 mm, shorter than inner, apices acute to attenuate (margins ciliate). |
Heads | borne singly. |
usually borne singly. |
2n | = 38. |
|
Balsamorhiza hispidula |
Balsamorhiza serrata |
|
Phenology | Flowering Apr–May. | Flowering Apr–Jun. |
Habitat | Basalt scablands and desert-steppe areas, juniper and sagebrush scrublands | Basaltic scablands, sagebrush scrub, openings in forests, meadow borders |
Elevation | 1800–2500 m (5900–8200 ft) | (1000–)1400–1500 m ((3300–)4600–4900 ft) |
Distribution |
AZ; CO; ID; MT; NV; OR; UT; WY
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CA; NV; OR; WA
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Discussion | Distribution of Balsamorhiza hispidula is highly disrupted in the southern part of its range. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 21, p. 98. | 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. hispidula | |
Name authority | W. M. Sharp: Ann. Missouri Bot. Gard. 22: 137, fig. 3, plate 5. (1935) | A. Nelson & J. F. Macbride: Bot. Gaz. 56: 479. (1913) |
Web links |