Liatris hirsuta


Brittonia 1: 98. 1931.

Common names: Hairy gayfeather
Synonyms: Liatris squarrosa var. hirsuta (Rydberg) Gaiser
Treatment appears in FNA Volume 21. Treatment on page 518. Mentioned on page 514, 517, 519.

Plants 20–70 cm. Corms globose to slightly elongate. Stems hirsute to piloso-hirsute. 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. Heads in loose, racemiform to spiciform arrays. Peduncles 0 or (peduncles spreading to ascending) 1–10 mm. Involucres cylindro-campanulate, 11–17 × 6–9 mm. 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. Florets 15–30; corolla tubes glabrous inside (lobes adaxially hispid). Cypselae 5.5–6.5 mm; pappi: lengths ± equaling corollas, bristles plumose.

Phenology: Flowering (Jun–)Jul–Aug(–Sep).
Habitat: Prairies, rocky slopes, flats, marl ridges, pine-oak woods, streamsides, roadsides
Elevation: 50–500(–900) m



Ark., Iowa, Kans., La., Miss., Mo., Nebr., Okla., Tex.


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.

Selected References


Lower Taxa

... more about "Liatris hirsuta"
Guy L. Nesom +
Rydberg +
Hairy gayfeather +
Ark. +, Iowa +, Kans. +, La. +, Miss. +, Mo. +, Nebr. +, Okla. +  and Tex. +
50–500(–900) m +
Prairies, rocky slopes, flats, marl ridges, pine-oak woods, streamsides, roadsides +
Flowering (Jun–)Jul–Aug(–Sep). +
Liatris squarrosa var. hirsuta +
Liatris hirsuta +
species +