Liatris

Liatris

Languages: English

Overview

General Description

"Perennials, 20–180 cm (corms globose to depressed-ovoid or napiform, sometimes elongated, becoming rhizomes, roots all or mostly adventitious).

Stems erect, simple or basally branched.

Leaves basal and cauline; alternate; ± petiolate (basal) or sessile (usually appressed to ascending); blades usually 1-nerved, sometimes 3- or 5-nerved, mostly linear to ovate-lanceolate, margin entire, faces often gland-dotted (stipitate-glandular in L. glandulosa).

 Heads discoid, in corymbiform, cymiform, racemiform, or spiciform arrays.

Involucres mostly campanulate to hemispheric or turbinate-cylindric, (2.5–)3–22(–25) mm diam. Phyllaries persistent or tardily falling, 18–40 in (2–)3–7 series, not notably nerved, ovate to elliptic or lanceolate, usually unequal (herbaceous to petaloid, margins often hyaline, often ciliate or irregularly toothed, apices often pink-white). Receptacles flat, epaleate. Florets 3–85; corollas usually lavender to dark magenta or pinkish purple, sometimes white, throats funnelform (lengths 4–6 times diams., externally glanduliferous, glabrous inside or pilose inside near filament insertions, hairs whitish, crisped); styles: bases not enlarged, glabrous, branches linear-clavate (papillate). Cypselae prismatic, 8–11-ribbed, usually hirsutulous to hirtellous-pilose (glabrous in L. oligocephala), usually gland-dotted; pappi persistent, of 12–40 coarsely barbellate to plumose bristles in 1–2 series. x = 10."

Nesom, Guy L.  in Flora of North America, Vol 21 Liatris p. 512 Oxford University Press, Inc.; New York, NY, 2006

"Liatris grow from round or oval, woody corms, each of which develops several flowering stems. Numerous, narrow leaves grow alternately on the stem, becoming shorter and thinner near the flower spike. The flower heads grow in  several rows along the stem to form a wand-like spike up to 15 inches in height. The flowers on the spikes open from the top downward (basipetally). One variety, L. aspera, flowers from the bottom up. The purple varieties are in greatest demand, though there is also interest in the rose-red and white varieties."

Stevens, Allan B. et.al. in Commercial Specialty Cut Flower production. Liatris. Cooperative Extention Service Kansas State University. Manhattan, Kansas oct 1993. Publication

Author(s): Tegegn, Tseday
Rights holder(s): Tegegn, Tseday

Relevance

Diseases

Leafspots: Erysiphe cichoracearum, Coleosporium lacinariae, Puccinia poarum, Other Leafspots,      Phyllosticta liatridis, Septoria liatridis, Wilts, Root-knot nematode (Meloidogyne sp.), Sclerotinia sclerotiorum, Verticillium albo-atrum

Stevens, Allan B. et.al. in Commercial Specialty Cut Flower production. Liatris. Cooperative Extention Service Kansas State University. Manhattan, Kansas oct 1993. Publication

http://www.ksre.ksu.edu/library/hort2/ep55.pdf

Author(s): Tegegn, Tseday
Rights holder(s): Tegegn, Tseday

Uses

"One of the reasons liatris are such popular cut flowers is their unusual mode of blooming. Unlike most plants they bloom from the top of their flower spikes down to the bottom. You can actually cut a portion off the top of the spike to bring indoors, and the remaining flower heads will continue to open and provide color for the landscape."

University of Florida IFAS Extension

"The abundance of fragrant flower produced by the liatris attracts a variety of wildlife all season. The summer blooms attract hummingbirds, butterflies and bees. In the fall, the liatris produces a seed pod (if the blooms are left intact on the plant) that attracts a wide array of hungry birds looking for a meal."

Stewart, Helen. How to grow Liatris. Suit 101.com. Apr. 12. 2010.

Author(s): Tegegn, Tseday
Rights holder(s): Tegegn, Tseday

Taxonomy

  • Kuhnia spicata (L.) Baill. (synonym)

References

Davit, C. (2002).  Lovely Liatris. Missouri Conservationist. 63(7), 
Jones, S J.. B. (1968).  Chromosome Numbers in Southeastern United States Compositae. Bulletin of the Torrey Botanical Club. I.. 95(4), 
Miller, J. H., & Miller K. (2005).  FOREST PLANTS OF THE SOUTHEAST AND THEIR WILDLIFE USES. Athens, Georgia: University of Georgia Press.
Nesom, G. L. (2006).  Liatris. Flora of North America. 21, New York: Oxford University Press, Inc. .
Stevens, A. B., Gast K. L. B., & O’Mara J. A. (1993).  Commercial Specialty Cut Flower production. Cooperative Extention Service Kansas State University.
von Linné, C., & Salvii. L. (1753).  Caroli Linnaei ... Species plantarum :exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas....