Euthamia leptocephala |
Euthamia occidentalis |
|
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bushy goldentop, Mississippi Valley goldentop |
western goldenrod, western goldentop |
|
Habit | Perennials or subshrubs, 30–100 cm. | Perennials or subshrubs, 40–200 cm. |
Stems | (erect, striate-angled) glabrous, not glaucous. |
(erect, stout) glabrous, glaucous. |
Leaves | ascending to spreading-ascending; blades 3- or -5-nerved, lanceolate to narrowly lanceolate, 40–80 × 3–6(–9) mm, lengths 8–18 times widths, abruptly reduced distally, firm-herbaceous, margins scabrous, apices mostly acute, faces glabrous, little and obscurely gland-dotted (9–29 dots per mm²), sometimes pustulate. |
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. |
Involucres | obconic, 4–6 mm. |
campanulate, 3.7–4.9 mm. |
Ray florets | usually 7–14. |
(15–)17–22(–28). |
Disc florets | 3–6; corollas 3.3–4.4 mm. |
(7–)9–11(–18); corollas 3.1–4.2 mm. |
Phyllaries | yellowish at bases, usually green-tipped, outer narrowly ovate, inner nearly linear, apices rounded to subacute (sometimes slightly resinous). |
stramineous, sometimes green-tipped, outer narrowly lanceolate, inner linear (firm), apices acute to acuminate. |
Heads | glomerate or pedunculate, in compact, usually round-topped arrays 6–35% of plant heights. |
mostly pedunculate, in relatively narrow, elongate arrays 33–60% of plant heights (often interrupted and with multiple levels). |
2n | = 18. |
= 18. |
Euthamia leptocephala |
Euthamia occidentalis |
|
Phenology | Flowering Sep–Nov. | Flowering Jul–Nov. |
Habitat | Moist, sandy soils of open areas, woodlands, and forest openings | Moist to wet soils of streambeds, lake shores, and fresh to saline marshes |
Elevation | 0–100 m (0–300 ft) | 0–1600 m (0–5200 ft) |
Distribution |
AL; AR; FL; GA; LA; MO; MS; NC; OK; TN; TX
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AZ; CA; CO; ID; MT; NE; NM; NV; OR; UT; WA; WY; BC; Mexico (Baja California)
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Discussion | I have seen no specimens of Euthamia leptocephala from Kentucky; it is to be expected there. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 100. | FNA vol. 20, p. 100. |
Parent taxa | Asteraceae > tribe Astereae > Euthamia | Asteraceae > tribe Astereae > Euthamia |
Sibling taxa | ||
Synonyms | Solidago leptocephala | E. californica, E. linearifolia, Solidago occidentalis |
Name authority | (Torrey & A. Gray) Greene ex Porter & Britton: Mem. Torrey Bot. Club 5: 321. (1894) | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 326. (1840) |
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