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-nerved 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.

"[" is not declared as a valid unit of measurement for this property."]" is not declared as a valid unit of measurement for this property.

... more about "Euthamia occidentalis"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
Arthur Haines +
Nuttall +
pale +  and stramineous +
decurrent +
Solidago subg. Euthamia +
herbaceous +  and firm-herbaceous +
8.2 cm82 mm <br />0.082 m <br /> (10 cm100 mm <br />0.1 m <br />) +
linear;lanceolate +
reduced +
4.3mm;10mm +
rugulose +  and muricate +
Western goldentop +
not 2-lipped +  and actinomorphic +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
terete +, oblong +  and narrowly ellipsoid +
fertile +  and bisexual +
fertile +  and bisexual +
B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nebr. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +, Wyo. +  and Mexico (Baja California) +
0–1600 m +
gland-dotted +
hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Moist to wet soils of streambeds, lake shores, and fresh to saline marshes +
pedunculate +
in corymbiform or paniculiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
campanulate +
0.37 cm3.7 mm <br />0.0037 m <br /> (0.49 cm4.9 mm <br />0.0049 m <br />) +
erect;ascending +
oblong-lanceolate +
cartilaginous +  and chartaceous +
2-carpellate +
persistent +
Flowering Jul–Nov. +
green-tipped +  and stramineous +
linear +  and ovate +
Trans. Amer. Philos. Soc., n. s. +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
branched +  and simple +
appendaged +  and truncate +
papillate +  and smooth +
Euthamia californica +, Euthamia linearifolia +  and Solidago occidentalis +
Euthamia occidentalis +
Euthamia +
species +
tubular +
40 cm400 mm <br />0.4 m <br /> (200 cm2,000 mm <br />2 m <br />) +