Balsamorhiza deltoidea |
Balsamorhiza subg. Artorhiza |
|
---|---|---|
deltoid balsam root, Puget balsamroot |
|
|
Habit | Plants 20–90 cm. | |
Taproots | relatively massive; bark relatively thick, corrugated; rhizomes none; caudices usually multi-branched. |
|
Basal leaves | blades green, deltate or rounded-deltate to triangular-deltate, 10–25+ × 7–15(–20) cm, bases cordate to sagittate, margins usually crenate to dentate (at least near bases), sometimes entire, apices acute, faces usually sparsely hirtellous to hispidulous, sometimes glabrous (usually gland-dotted, sometimes vernicose). |
blades mostly rounded-deltate or deltate to triangular-deltate, bases sagittate or cordate to truncate, margins usually entire, sometimes crenate. |
Cauline leaves | usually at mid stems. |
|
Petioles | mostly longer than leaf blades. |
|
Involucres | campanulate to hemispheric 15–30+ mm diam. |
|
Ray corollas | yellow. |
|
Ray laminae | 20–50 mm. |
|
Outer phyllaries | oblong to lanceolate or lance-linear, (12–)30–40(–60) mm, usually much surpassing inner, apices acute. |
|
Heads | usually borne singly, sometimes 2+. |
|
2n | = 38. |
|
Balsamorhiza deltoidea |
Balsamorhiza subg. Artorhiza |
|
Phenology | Flowering (Mar–)Apr–Jun(–Jul). | |
Habitat | Open hillsides, openings in chaparral or forests | |
Elevation | 60–1800(–2400) m (200–5900(–7900) ft) | |
Distribution |
CA; OR; WA; BC
|
w North America |
Discussion | Balsamorhiza deltoidea varies in the crenation of the leaf margins. The variability may stem from an old hybridization with B. hookeri or other species of Balsamorhiza. Otherwise, B. deltoidea shows little significant variability except where it hybridizes with B. careyana in the narrows of the Columbia River Gorge. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species 3 (3 in the flora). Members of subg. Artorhiza inhabit relatively deep, well-developed soils, flower only after at least 4–5 years, and attain ages of possibly 50 years. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 95. | FNA vol. 21, p. 94. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza > subg. Artorhiza | Asteraceae > tribe Heliantheae > subtribe Ecliptinae > Balsamorhiza |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | B. glabrescens | B. unranked Artorhiza, B. section Artorhiza |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 351. (1840) | (Nuttall) W. M. Sharp: Ann. Missouri Bot. Gard. 22: 115. (1935) |
Web links |
|