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Balsamorhiza rosea

rosy balsamroot

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

Distribution
[WildflowerSearch map]
[BONAP county map]
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
B. careyana, B. deltoidea, B. deltoidea x Balsamorhiza sericea, B. hispidula, B. hookeri, B. incana, B. lanata, B. macrophylla, B. sagittata, B. sericea, B. serrata
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