Balsamorhiza rosea |
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rosy balsamroot |
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Stems | 5–15 cm, villous-hirsute to villous below heads; from single taproot. |
Leaves | oblong-lanceolate, pinnately lobed from ¼ to ??? to midrib, occasionally some leaves undivided; margins toothed to crenate with pointed teeth; surfaces villous-hirsute; more densely so abaxially than adaxially; basal leaves in 1–few rosettes; blades 2.5–7 × 1.5–2.8 cm; pinnae 6–12 mm wide; petioles 1.5–4.5 cm; cauline leaves in 1 opposite pair or 0; blades 0.7–2 × 0.3–1 cm; petioles 3–4 cm. |
Inflorescences | with 1 terminal head. |
Involucres | 10–13 × 20–25 mm. |
Ray florets | ~13, yellow when young, turning from yellow to pink or red; rays 10–15 × 7–8 mm. |
Disc florets | ~6 mm. |
Phyllaries | linear to linear-lanceolate, 12–15 × 1–2 cm, villous. |
Fruits | 5–6 mm, strigillose. |
Paleae | 11–13 mm. |
2n | =38. |
Balsamorhiza rosea |
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Distribution | |
Discussion | Open, rocky areas. Flowering Apr–May. 300–400 m. Col. WA. Native. Balsamorhiza rosea occurs almost entirely in Washington, with one known locality in Oregon. |
Source | Flora of Oregon, volume 2, page 200 Abigail (Abby) Moore |
Sibling taxa | |
Web links |