Balsamorhiza sagittata

(Pursh) Nuttall

Trans. Amer. Philos. Soc., n. s. 7: 350. 1840. 1840

IllustratedEndemic
Basionyms: Buphthalmum sagittatum Pursh Fl. Amer. Sept. 2: 564. 1813
Synonyms: Balsamorhiza helianthoides (Nuttall) Nuttall Espeletia helianthoides Nuttall Espeletia sagittata (Pursh) Nuttall
Treatment appears in FNA Volume 21. Treatment on page 95. Mentioned on page 93, 97, 98.

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

V21-219-distribution-map.gif

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.

Lower Taxa

None.

... more about "Balsamorhiza sagittata"
William A. Weber +
(Pursh) Nuttall +
Buphthalmum sagittatum +
Alta. +, B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, S.Dak. +, Utah +, Wash. +  and Wyo. +
(100–)900–2500(–3000) m +
Openings, banks, flats, meadows, ridges, sagebrush scrub, conifer forests +
Flowering (Apr–)May–Jun(–Jul). +
Trans. Amer. Philos. Soc., n. s. +
Illustrated +  and Endemic +
Balsamorhiza helianthoides +, Espeletia helianthoides +  and Espeletia sagittata +
Balsamorhiza sagittata +
Balsamorhiza subg. Artorhiza +
species +