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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
from FNA
AL; CT; DC; DE; FL; GA; KY; LA; MA; MD; ME; MS; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; VT; WV
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; CT; DC; DE; GA; IN; KY; LA; MA; MD; MS; NC; NH; NJ; NY; OH; PA; RI; SC; TN; VA; WV
[WildflowerSearch map]
[BONAP county map]
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 Asteraceae > tribe Astereae > Sericocarpus Asteraceae > tribe Astereae > Sericocarpus
Sibling taxa
S. linifolius, S. oregonensis, S. rigidus, S. tortifolius
S. asteroides, S. oregonensis, S. rigidus, S. tortifolius
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
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