Euthamia occidentalis


Trans. Amer. Philos. Soc., n. s. 7: 326. 1840.

Common names: Western goldentop
Synonyms: Euthamia californica Gandoger Euthamia linearifolia Gandoger Solidago occidentalis (Nuttall) Torrey & A. Gray
Treatment appears in FNA Volume 20. Treatment on page 100. Mentioned on page 98.

Perennials or subshrubs, 40–200 cm. Stems (erect, stout) glabrous, glaucous. Leaves spreading-ascending to erect; blades 3- or -5-nerved, linear, 82–100 × 4.3–10 mm, lengths 10–27 times widths, gradually to abruptly reduced distally, herbaceous to firm-herbaceous, margins scabrous, apices abruptly acute to acuminate, faces ± gland-dotted (18–56 dots per mm²), adaxial and vein axils often sparsely hairy. Heads mostly pedunculate, in relatively narrow, elongate arrays 33–60% of plant heights (often interrupted and with multiple levels). Involucres campanulate, 3.7–4.9 mm. Phyllaries stramineous, sometimes green-tipped, outer narrowly lanceolate, inner linear (firm), apices acute to acuminate. Ray florets (15–)17–22(–28). Disc florets (7–)9–11(–18); corollas 3.1–4.2 mm. 2n = 18.

Phenology: Flowering Jul–Nov.
Habitat: Moist to wet soils of streambeds, lake shores, and fresh to saline marshes
Elevation: 0–1600 m



B.C., Ariz., Calif., Colo., Idaho, Mont., Nebr., Nev., N.Mex., Oreg., Utah, Wash., Wyo., Mexico (Baja California).


Selected References


Lower Taxa

... more about "Euthamia occidentalis"
Arthur Haines +
Nuttall +
Solidago subg. Euthamia +
Western goldentop +
B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +, Wyo. +  and Mexico (Baja California). +
0–1600 m +
Moist to wet soils of streambeds, lake shores, and fresh to saline marshes +
Flowering Jul–Nov. +
Trans. Amer. Philos. Soc., n. s. +
Euthamia californica +, Euthamia linearifolia +  and Solidago occidentalis +
Euthamia occidentalis +
Euthamia +
species +