Dieteria canescens var. glabra

(A. Gray) D. R. Morgan & R. L. Hartman

Sida 20: 1397. 2003.

Basionym: Machaeranthera canescens var. glabra A. Gray Smithsonian Contr. Knowl. 3(5): 89. 1852
Synonyms: Aster canescens var. viridis A. Gray M. linearis Greene
Treatment appears in FNA Volume 20. Treatment on page 401. Mentioned on page 398, 399.

Annuals or biennials, rarely short-lived perennials. Stems usually 1 (sometimes more), erect, glabrous, puberulent, or canescent, sometimes sparsely stipitate-glandular; branches ascending. Mid leaf blades lanceolate to linear. Peduncles equaling or longer than involucres. Involucres campanulate to broadly turbinate, 6–10 (–12) mm. Phyllaries in 4–8 series, usually appressed, sometimes spreading, rarely reflexed; apices usually glabrous or moderately stipitate-glandular, rarely canescent. Ray florets pistillate, fertile. Cypselae sparsely appressed-hairy.


Phenology: Flowering Jul–Sep.
Habitat: Grasslands, creosote bush scrublands, pinyon-juniper woodlands, pine forests
Elevation: 1000–2300 m

Distribution

V20-918-distribution-map.gif

Ariz., Colo., Kans., N.Mex., Tex., Wyo., Mexico (Chihuahua).

Discussion

Variety glabra is found in the western Great Plains, southern Rocky Mountain foothills, and Chihuahuan Desert.

Selected References

None.

Lower Taxa

None.
David R. Morgan +
(A. Gray) D. R. Morgan & R. L. Hartman +
Machaeranthera canescens var. glabra +
Ariz. +, Colo. +, Kans. +, N.Mex. +, Tex. +, Wyo. +  and Mexico (Chihuahua). +
1000–2300 m +
Grasslands, creosote bush scrublands, pinyon-juniper woodlands, pine forests +
Flowering Jul–Sep. +
Illustrated +
Aster canescens var. viridis +  and M. linearis +
Dieteria canescens var. glabra +
Dieteria canescens +
variety +