Difference between revisions of "Balsamorhiza sagittata"
Trans. Amer. Philos. Soc., n. s. 7: 350. 1840.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Revision as of 20:35, 16 December 2019
Plants (15–)20–40(–65) cm. Basal leaves: blades ± silvery to white or gray-green, rounded-deltate or deltate to triangular-deltate, 5–25 × 3–15 cm, bases ± cordate, margins entire, apices acute to attenuate, faces sericeous, tomentose, tomentulose, or velutinous (at least abaxially, usually gland-dotted as well), sometimes glabrescent. Heads usually borne singly, sometimes 2–3+. Involucres hemispheric to turbinate, 12–25 mm diam. Outer phyllaries lanceolate to oblanceolate or linear, (15–)20–25(–30+) mm, equaling or surpassing inner, apices acute to acuminate. Ray laminae 20–40 mm. 2n = 38.
Phenology: Flowering (Apr–)May–Jun(–Jul).
Habitat: Openings, banks, flats, meadows, ridges, sagebrush scrub, conifer forests
Elevation: (100–)900–2500(–3000) m
Distribution
Alta., B.C., Ariz., Calif., Colo., Idaho, Mont., Nev., Oreg., S.Dak., Utah, Wash., Wyo.
Discussion
Balsamorhiza sagittata grows east of the Cascade-Sierra axis to the Rocky Mountains and Black Hills. It is one of the more spectacular of all spring-flowering plants in the northwestern United States. Hybrids occur along lines of contact between B. sagittata and almost all species of sect. Balsamorhiza except B. macrophylla (a high polyploid).
Selected References
None.