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Liatris bracteata
Liatris bracteata
Gaiser
Family:
Asteraceae
Flora of North America
Resources
Guy L. Nesom in Flora of North America (vol. 21)
Plants
25-75 cm.
Corms
globose.
Stems
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).
Heads
(widely spaced, stems evident) in loose, spiciform arrays.
Peduncles
0.
Involucres
turbinate-cylindric, (11-)12-15 × 5-7 mm.
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.
Florets
8-14(-16); corolla tubes glabrous inside.
Cypselae
6-9 mm;
pappi:
lengths ± equaling corollas, bristles plumose.
2
n
= 60. Flowering Sep-Nov. Coastal prairies, roadsides, railroads, clays, sandy loams; of conservation concern; 0-10(-50) m; Tex.
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
.
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