Liatris bracteata |
Liatris elegantula |
|
---|---|---|
bract blazing star, South Texas gayfeather |
Greene's elegant gayfeather, shaggy blazing star |
|
Habit | Plants 25–75 cm. | Plants 60–105 cm. |
Stems | glabrous. |
glabrous. |
Leaves | basal and proximal cauline 1-nerved, linear, 40–100 × 1–2 mm, even-sized or gradually reduced distally, essentially glabrous, gland-dotted (proximal margins sparsely ciliate). |
basal and proximal cauline 1-nerved, linear-oblanceolate to narrowly oblanceolate, 80–210 × 2–5(–10) mm, gradually or abruptly reduced distally, essentially glabrous (sparsely piloso-ciliate along proximal margins), gland-dotted. |
Peduncles | 0. |
0 or (ascending) 2(–7) mm. |
Involucres | turbinate-cylindric, (11–)12–15 × 5–7 mm. |
turbinate, 6–8 × 5–7 mm. |
Florets | 8–14(–16); corolla tubes glabrous inside. |
(7–)8–11(–13); corolla tubes pilose inside. |
Phyllaries | in 5–6(–7) series, broadly oblong to lanceolate-oblong, strongly unequal, glabrous, margins without hyaline borders, finely ciliolate, apices obtuse, rounded, or truncate, sharply involute-apiculate. |
in 3–4(–5) series, mostly oblong, unequal, essentially glabrous, margins with hyaline borders (0.2–0.4 mm wide), sometimes sparsely ciliolate, apices rounded. |
Heads | (widely spaced, stems evident) in loose, spiciform arrays. |
in loose, racemiform arrays (internodes 2–14 mm). |
Cypselae | 6–9 mm; pappi: lengths ± equaling corollas, bristles plumose. |
2.8–3.5(–3.8) mm; pappi: lengths ± equaling corollas, bristles barbellate. |
Corms | globose. |
mostly globose. |
2n | = 60. |
= 20. |
Liatris bracteata |
Liatris elegantula |
|
Phenology | Flowering Sep–Nov. | Flowering Aug–Oct(–Nov). |
Habitat | Coastal prairies, roadsides, railroads, clays, sandy loams | Longleaf pine-scrub oak, pine, live oak-pine, deciduous oak-pine, deciduous flatwoods, sandhills, savanna edges, edges of cypress depressions, depression meadows, live oak-pine-palmetto hammocks, sandy clay or loam, rarely clay |
Elevation | 0–10(–50) m (0–0(–200) ft) | 0–300(–500) m (0–1000(–1600) ft) |
Distribution |
TX |
AL; FL; GA; MS
|
Discussion | Of conservation concern. Liatris bracteata might justifiably be treated at varietal rank within L. punctata; the morphologic difference appears to be primarily in head size (especially floret number). Chromosome counts (L. O. Gaiser 1950c) indicate that L. bracteata is hexaploid, compared to diploids and tetraploids in populations of L. punctata. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 21, p. 520. | FNA vol. 21, p. 530. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Lacinaria elegantula, L. graminifolia var. elegantula | |
Name authority | Gaiser: Rhodora 48: 371. (1946) | (Greene) K. Schumann: Just’s Bot. Jahresber. 29(1): 569. (1903) |
Web links |