Balsamorhiza sagittata (Pursh) Nutt.
Family: Asteraceae
arrowleaf balsamroot
Balsamorhiza sagittata image
Barry Breckling  
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 oblance-olate or linear, (15-)20-25(-30+) mm, equaling or surpassing inner, apices acute to acuminate. Ray laminae 20-40 mm. 2n = 38. Flowering (Apr-)May-Jun(-Jul). Openings, banks, flats, meadows, ridges, sagebrush scrub, conifer forests; (100-)900-2500(-3000) m; Alta., B.C.; Ariz., Calif., Colo., Idaho, Mont., Nev., Oreg., S.Dak. , Utah, Wash., Wyo. 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).

Balsamorhiza sagittata image
Tony Frates  
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Gerald and Buff Corsi  
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Susan Prince  
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Barry Breckling  
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Gerald and Buff Corsi  
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Steven Thorsted  
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Gerald and Buff Corsi  
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Gerald and Buff Corsi  
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Gary A. Monroe  
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