Difference between revisions of "Liatris cylindracea"
Fl. Bor.-Amer. 2: 93. 1803.
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|tribe=Asteraceae tribe Eupatorieae | |tribe=Asteraceae tribe Eupatorieae | ||
|genus=Liatris | |genus=Liatris | ||
Latest revision as of 20:09, 5 November 2020
Plants 20–60 cm. Corms usually globose, rarely elongate. Stems glabrous. Leaves: basal and proximal cauline 3(–5)-nerved, linear-oblanceolate to linear-lanceolate, 80–250 × 2–6 mm (largest usually distal to proximalmost), gradually reduced distally, essentially glabrous (proximal margins pilose-ciliate). Heads borne singly or (2–28) in loose to dense, racemiform to spiciform arrays. Peduncles 0 or (spreading-ascending) 2–10(–20) mm. Involucres cylindro-campanulate, (11–)13–18 × 6–8 mm. Phyllaries in 5–7 series, ovate-triangular (outer) to broadly oblong or spatulate-oblong, strongly unequal, essentially glabrous, margins usually with narrow hyaline borders, ciliolate, apices broadly rounded, rounded-acuminate, or truncate (inner stiffly mucronate). Florets 10–35; corolla tubes glabrous inside (lobes adaxially hispid). Cypselae 5–7 mm; pappi: lengths ± equaling corollas, bristles plumose.
Phenology: Flowering Jul–Sep.
Habitat: Prairies, limestone outcrops, bluffs, barrens, and glades, marl, sandstone outcrops, dunes, roadsides, sandy pine-oak, wooded northern slopes
Elevation: 100–400 m
Distribution
Ont., Ala., Ark., Ga., Ill., Ind., Iowa, Kans., Ky., Mich., Minn., Mo., N.Y., Ohio, Okla., Tenn., Wis.
Discussion
Stems and leaves of Liatris cylindracea sometimes are hairy (Kentucky, Missouri), perhaps reflecting genetic influence from L. hirsuta. See also discussion under 1. L. compacta.
Selected References
None.