Sericocarpus asteroides |
Sericocarpus linifolius |
|
---|---|---|
tooth white-top-aster |
narrow-leaf white-top-aster |
|
Habit | Plants 14–65 cm. | Plants 22–75 cm. |
Stems | erect, puberulent. |
erect (stout, branched), glabrate. |
Leaves | basal persistent at flowering, winged-petiolate, blades oblanceolate to obovate or spatulate, 20–150 mm, serrate near apices, puberulent; cauline sessile, blades narrowly to broadly ovate, 10–110 × 4–30 mm, bases cuneate, margins serrate, distal becoming entire, apices acuminate to acute, faces puberulent. |
basal and proximalmost cauline withering by flowering; cauline sessile; blades linear, 10–80 × 1–10 mm, margins entire, apices acuminate, faces glabrate. |
Peduncle | bracts absent. |
bracts broadly lanceolate to narrowly ovate, glabrate. |
Involucres | 4–7 mm at flowering. |
4–6 mm. |
Ovaries | fusiform-obconic, 0.8–2 mm, densely strigose; pappi: inner series 4–5 mm. |
obconic, 0.8–1.3 mm, densely strigose; pappi: inner series 3–6 mm. |
Ray florets | 3–7; corolla tubes 2–4 mm, laminae 2–6 mm. |
2–6; tubes 2–4 mm, laminae 4–11 mm. |
Disc florets | 9–20; corolla tubes 3–4 mm, lobes 0.6–2 mm. |
5–15; corollas 2–4 mm, lobes 1–2 mm. |
Phyllaries | in 3–4 series, outer 2–4 mm, mid 3–5 mm, glabrate. |
in 3–4 series, outer 2–4 mm, mid 3–4 mm, glabrate. |
Heads | 2–5 per branch, in corymbiform arrays. |
2–4 per branch, in broadly corymbiform arrays. |
2n | = 18. |
= 18. |
Sericocarpus asteroides |
Sericocarpus linifolius |
|
Phenology | Flowering mid summer–early fall. | Flowering mid summer–early fall. |
Habitat | Dry sandy, clay, and shaley open soils in fields and open mixed and pine woods, road margins, eastern deciduous forest | Dry to moist sandy, clay, and gravelly soils of open deciduous and pine woods, oak and pine barrens, roadsides, fields |
Elevation | 0–1600 m (0–5200 ft) | 0–900 m (0–3000 ft) |
Distribution |
AL; CT; DC; DE; FL; GA; KY; LA; MA; MD; ME; MS; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; VT; WV
|
AL; CT; DC; DE; GA; IN; KY; LA; MA; MD; MS; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; WV
|
Discussion | Collections of Sericocarpus asteroides purportedly from Indiana and Wisconsin are of questionable provenance or chance introductions. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 103. | FNA vol. 20, p. 103. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Conyza asteroides, Aster asteroides, Aster paternus | Conyza linifolia, A. solidagineus, S. solidagineus |
Name authority | (Linnaeus) Britton: Gen. Sp. Aster., 150. (1832) | (Linnaeus) Britton: Prelim. Cat., 26. (1888) — not Britton 1888 |
Web links |