Balsamorhiza serrata

A. Nelson & J. F. Macbride

Bot. Gaz. 56: 479. 1913.

Treatment appears in FNA Volume 21. Treatment on page 96. Mentioned on page 94.

Plants 10–20(–30) cm. Basal leaves: blades pale green to gray-green, lanceolate or lance-ovate, 5–15(–20+) × 2–5(–10) cm (earliest sometimes, later seldom, pinnately lobed, mostly toward tips), bases usually cuneate to subtruncate, sometimes cordate, margins usually dentate to serrate, apices acute, faces hirsutulous to scabrous. Heads usually borne singly. Involucres campanulate, 15–25 mm diam. Outer phyllaries lanceolate to lance-triangular, 10–22 mm, shorter than inner, apices acute to attenuate (margins ciliate). Ray laminae (20–)30–40. 2n = 38.

Phenology: Flowering Apr–Jun.
Habitat: Basaltic scablands, sagebrush scrub, openings in forests, meadow borders
Elevation: (1000–)1400–1500 m



Calif., Nev., Oreg., Wash.


Balsamorhiza serrata hybridizes with B. careyana. Leaves of the hybrids tend to be prostrate rather than erect. Most of the hybrids display the larger size of B. careyana and lack the pubescence of the heads; serrata-like plants never develop more than a single head nor do they have the pubescence of the cypselae.

Selected References


Lower Taxa

... more about "Balsamorhiza serrata"
William A. Weber +
A. Nelson & J. F. Macbride +
Calif. +, Nev. +, Oreg. +  and Wash. +
(1000–)1400–1500 m +
Basaltic scablands, sagebrush scrub, openings in forests, meadow borders +
Flowering Apr–Jun. +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Balsamorhiza serrata +
Balsamorhiza subg. Balsamorhiza +
species +