Liatris aspera |
Liatris chapmanii |
|
---|---|---|
rough blazing star, rough gayfeather, tall blazing star |
Chapman's blazing star, Chapman's gayfeather |
|
Habit | Plants 30–180 cm. | Plants 35–75(–150) cm. |
Stems | hispidulous-puberulent. |
hirtellous. |
Leaves | basal (usually withering before flowering) and proximal cauline 1-nerved, broadly oblanceolate to elliptic- or lanceolate-spatulate to linear-lanceolate, 80–250 × (4–)6–25 mm, gradually or abruptly reduced distally, essentially glabrous or sparsely or densely puberulent-hispidulous, ± gland-dotted (distal especially). |
basal and proximal cauline 1-nerved, spatulate-oblanceolate to narrowly oblanceolate, 40–150(–180) × 4–8(–11) mm, abruptly reduced (linear, 1–2 mm wide), then gradually reduced distally, essentially glabrous or hirtellous (sometimes mostly along abaxial midveins), gland-dotted. |
Peduncles | 0 or (ascending to spreading or deflexed) 1–5(–10) mm. |
0. |
Involucres | campanulate-hemispheric to turbinate-campanulate, (9–)10–16 × 10–20 mm. |
cylindric, 8–12 × 3.5–5 mm. |
Florets | (14–)18–24(–30); corolla tubes pilose inside. |
3–4; corolla tubes glabrous inside. |
Phyllaries | usually in 4–5 series, (outer or outer and middle usually reflexed) broadly obovate to oblong-spatulate, unequal, essentially glabrous, margins with relatively broad, whitish-hyaline, irregular to erose or lacerate borders (especially on the distal 1/3), strongly bullate (with a sharp, low, rounded buttress delimiting the hyaline border), apices usually rounded to subtruncate. |
in 3(–4) series, oblong to oblong-lanceolate, unequal, usually glabrous, rarely minutely puberulent, margins with hyaline borders, apices acute to acuminate. |
Heads | in loose, spiciform arrays. |
(appressed, overlapping) in dense, spiciform arrays. |
Cypselae | (3.5–)4.5–6 mm; pappi: lengths ± equaling corollas, bristles barbellate. |
(3–)4–6 mm; pappi: lengths ± equaling corollas, bristles barbellate. |
Corms | globose. |
globose to elongate. |
2n | = 20. |
= 20. |
Liatris aspera |
Liatris chapmanii |
|
Phenology | Flowering Aug–Sep(–Oct). | Flowering Aug–Oct. |
Habitat | Prairies, barrens, old fields, sand dunes, ridges, fields, stream bottoms, sandstone outcrops, limestone ridges, hills, oak, oak-juniper, and oak-pine woodlands, jack pine, sand, silt loam | Dunes, beach strands, sand ridges, fields, roadsides, longleaf pine savannas, longleaf pine-turkey oak, turkey oak, evergreen oak-sand pine-scrub, scrub with Ceratiola and Pinus clausa |
Elevation | 50–500(–900) m (200–1600(–3000) ft) | 0–50 m (0–200 ft) |
Distribution |
AL; AR; FL; GA; IA; IL; IN; KS; KY; LA; MI; MN; MO; MS; NC; ND; NE; OH; OK; SC; SD; TN; TX; VA; WI; WV; ON
|
AL; FL; GA
|
Discussion | Plants of Liatris aspera from the Dakotas, Minnesota, Nebraska, Iowa, and Kansas have consistently sparsely to densely puberulent-hispidulous leaves (var. aspera); those to the east usually have glabrous leaves (var. intermedia); variation in vestiture occurs in Missouri, Illinois, and Indiana and identities in this large area would have to be arbitrary or typological if varieties were formally recognized. Variety salutans was recognized by Shinners on the basis of its deflexed (versus horizontal or ascending) heads; such plants occur in Texas, western Louisiana, and adjacent areas of Arkansas and Oklahoma. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 21, p. 533. | FNA vol. 21, p. 526. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lacinaria scariosa var. intermedia, L. aspera var. intermedia, L. aspera var. salutans, L. spheroidea var. salutans | Lacinaria chapmanii |
Name authority | Michaux: Fl. Bor.-Amer. 2: 92. (1803) | Torrey & A. Gray: Fl. N. Amer. 2: 502. (1843) |
Web links |