Liatris hirsuta |
Liatris gracilis |
|
---|---|---|
hairy gayfeather, scaly blazing star |
slender blazing star, slender gayfeather |
|
Habit | Plants 20–70 cm. | Plants 20–100 cm. |
Stems | hirsute to piloso-hirsute. |
puberulent to piloso- or strigoso-puberulent. |
Leaves | basal and proximal cauline 3–5-nerved, linear-lanceolate, 60–180 × 2–7 mm (largest usually distal to proximalmost), gradually reduced distally, hirsute to piloso-hirsute. |
basal and proximal cauline 1-nerved, usually linear to linear-oblanceolate or oblanceolate, sometimes narrowly spatulate, 50–150 × 2–8(–10) mm, gradually or abruptly reduced on distal 1/2–1/3 of stems, essentially glabrous (proximal margins ciliate). |
Peduncles | 0 or (peduncles spreading to ascending) 1–10 mm. |
0 or (usually straight, stiffly spreading to ascending) 2–10(–12) mm. |
Involucres | cylindro-campanulate, 11–17 × 6–9 mm. |
cylindro-campanulate, (4–)4.5–6(–7) × 3–4(–5) mm. |
Florets | 15–30; corolla tubes glabrous inside (lobes adaxially hispid). |
3–6(–9); corolla tubes pilose inside. |
Phyllaries | (spreading to reflexed) in 5–7 series, ovate-triangular (outer) to oblong-triangular, unequal, usually sparsely hirsute, margins without hyaline borders, coarsely hirsute-ciliate, apices acute-acuminate. |
in 3(–4) series, (green to purple) ovate to oblong, strongly to weakly unequal, sparsely puberulent, margins with hyaline borders, ciliolate, apices rounded to truncate. |
Heads | in loose, racemiform to spiciform arrays. |
in loose, racemiform arrays. |
Cypselae | 5.5–6.5 mm; pappi: lengths ± equaling corollas, bristles plumose. |
3–3.5 mm; pappi: lengths ± equaling corollas, bristles barbellate. |
Corms | globose to slightly elongate. |
globose to subglobose. |
2n | = 20. |
|
Liatris hirsuta |
Liatris gracilis |
|
Phenology | Flowering (Jun–)Jul–Aug(–Sep). | Flowering (Jul–)Aug–Oct(–Nov). |
Habitat | Prairies, rocky slopes, flats, marl ridges, pine-oak woods, streamsides, roadsides | Longleaf pine, slash pine, palmetto-scrub oak, turkey oak-bluejack oak, sand scrub, sand ridges, uplands, boggy flatwoods, sandy peat, fencerows, roadsides, woodland edges |
Elevation | 50–500(–900) m (200–1600(–3000) ft) | 10–50 m (0–200 ft) |
Distribution |
AR; IA; KS; LA; MO; MS; NE; OK; TX
|
AL; FL; GA; MS; SC
|
Discussion | Liatris hirsuta occupies a geographic range separate from and nearly contiguous with L. squarrosa. They have been treated as a single species. Liatris hirsuta is sympatric (without intergrades) with L. squarrosa var. squarrosa in Texas, Oklahoma, Louisiana, and Mississippi; it is sympatric with L. compacta in Arkansas; it intergrades with L. cylindracea in Missouri. See also discussion under 1. L. compacta. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Plants of Liatris gracilis from the panhandle of Florida and the southern tier of Alabama counties tend to have sharply acute phyllaries; intermediates are often encountered. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 21, p. 518. | FNA vol. 21, p. 531. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | L. squarrosa var. hirsuta | Lacinaria gracilis, Lacinaria laxa |
Name authority | Rydberg: Brittonia 1: 98. (1931) | Pursh: Fl. Amer. Sept. 2: 508. (1813) |
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