Deschampsia

Wavy hair-grass Deschampsia flexuosa, photographed by Botaurus.

Belongs within: Pooideae.

Deschampsia is a genus of grasses found in cold and temperate regions of the world.

Characters (from Cheeseman 1906): Perennial grasses. Leaves narrow, flat or convolute. Spikelets rather small, 2-flowered, arranged in lax or contracted panicles; rhachilla disarticulating above the 2 outer glumes, produced between the flowering glumes and above the upper flower as a naked or hairy bristle, rarely ending in an imperfect flower. Glumes 4; 2 outer slightly unequal, persistent, empty, keeled, acute, membranous, shining ; 3rd and 4th (or flowering glumes) membranous or almost hyaline, toothed at the apex ; dorsal awn slender, twisted at the base, sometimes very small or wanting. Palea narrow, 2-nerved. Lodicules 2, ovate. Stamens 3. Styles distinct; stigmas plumose. Grain oblong, enclosed within the unaltered flowering glume and palea.

<==Deschampsia
    |--D. aciphyllaD03
    |--D. andina Phil. 1873 [=Deyeuxia andina]S06
    |--D. antarcticaVVZ11 [=Catabrosa antarcticaC06, Triodia antarctica Benth. 1881C06]
    |--D. atropurpureaH93
    |--D. cespitosaH93 [=Aira caespitosaC06; incl. Aira australisC06, Agrostis aucklandicaC06, Aira kingiiC06]
    |    |--D. c. ssp. cespitosa [incl. D. cespitosa ssp. beringensis]H93
    |    `--D. c. ssp. holciformisH93
    |--D. chapmani Petrie 1891C06
    |--D. danthonioidesH93
    |--D. elongataH93
    |--D. flexuosaD03
    |--D. gracillima Kirk 1891C06
    |--D. kingiiD03
    |--D. klossiiC78
    |--D. novae-zealandiae Petrie 1891 [incl. D. hookeri Kirk 1891]C06
    |--D. penicillata Kirk 1895C06
    |--D. pusilla Petrie 1891C06
    `--D. tenella Petrie 1891C06

*Type species of generic name indicated

References

[C06] Cheeseman, T. F. 1906. Manual of the New Zealand Flora. John Mackay, Government Printer: Wellington.

[C78] Clunie, N. M. U. 1978. The vegetation. In: Womersley, J. S. (ed.) Handbooks of the Flora of Papua New Guinea vol. 1 pp. 1–11. Melbourne University Press: Carlton South (Australia).

[D03] Dusén, P. 1903. The vegetation of western Patagonia. In: Scott, W. B. (ed.) Reports of the Princeton University Expeditions to Patagonia, 1896–1899 vol. 8. Botany pp. 1–34. The University: Princeton (New Jersey).

[H93] Hickman, J. C. (ed.) 1993. The Jepson Manual: Higher Plants of California. University of California Press: Berkeley (California).

[S06] Stuckert, T. 1906. Segunda contribución al conocimiento de las gramináceas Argentinas. Anales del Museo Nacional de Buenos Aires, serie 3, 6: 409–555.

[VVZ11] Van de Vijver, B., R. Zidarova, M. Sterken, E. Verleyen, M. de Haan, W. Vyverman, F. Hinz & K. Sabbe. 2011. Revision of the genus Navicula s.s. (Bacillariophyceae) in inland waters of the sub-Antarctic and Antarctic with the description of five new species. Phycologia 50 (3): 281–297.

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