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barrelhead gayfeather, cylindrical blazingstar, Ontario blazing star

Habit Plants 20–60 cm.
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).

Peduncles

0 or (spreading-ascending) 2–10(–20) mm.

Involucres

cylindro-campanulate, (11–)13–18 × 6–8 mm.

Florets

10–35;

corolla tubes glabrous inside (lobes adaxially hispid).

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).

Heads

borne singly or (2–28) in loose to dense, racemiform to spiciform arrays.

Cypselae

5–7 mm;

pappi: lengths ± equaling corollas, bristles plumose.

Corms

usually globose, rarely elongate.

Liatris cylindracea

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 (300–1300 ft)
Distribution
from FNA
AL; AR; GA; IA; IL; IN; KS; KY; MI; MN; MO; NY; OH; OK; TN; WI; ON
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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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 21, p. 518.
Parent taxa Asteraceae > tribe Eupatorieae > Liatris
Sibling taxa
L. acidota, L. aestivalis, L. aspera, L. bracteata, L. chapmanii, L. cokeri, L. compacta, L. cymosa, L. elegans, L. elegantula, L. garberi, L. gholsonii, L. glandulosa, L. gracilis, L. helleri, L. hirsuta, L. laevigata, L. lancifolia, L. ligulistylis, L. microcephala, L. ohlingerae, L. oligocephala, L. patens, L. pauciflora, L. pilosa, L. provincialis, L. punctata, L. pycnostachya, L. savannensis, L. scariosa, L. spicata, L. squarrosa, L. squarrulosa, L. tenuifolia, L. tenuis, L. virgata
Synonyms Lacinaria cylindracea, L. intermedia, L. squarrosa var. intermedia
Name authority Michaux: Fl. Bor.-Amer. 2: 93. (1803)
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