Euthamia occidentalis

Nuttall

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

Distribution

V20-195-distribution-map.gif

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

Discussion

Selected References

None.

Lower Taxa

None.
... 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 +