Calamagrostis. | LXXXIX. GRAMINER. 519 
3. ©. stricta, Nutt. (fig. 1188). Narrow Smallreed—A more erect 
plant than C. lanceolata, 14 to 3 feet high, with stiffer, narrow leaves. 
Panicle very narrow, 4 to 6 inches long, Spikelets smaller than in the 
last species, the outer glumes broader. Hairs of the axis considerably 
shorter than the following glume, which has an awn inserted rather below 
the middle, and reaching to about its own length, There is also at the 
base of the palea a rudimentary prolongation of the axis, in the shape of a 
minute bristle, with a tuft of hairs. In this respect, as in the shortness of 
the hairs of the axis, the species very nearly approaches Deyeuwia, an 
exotic genus intermediate as it were between Agrostis and Calamagrostis. 
Deyeuxia neglecta, Kunth. 
In bogs and marshes, in northern and Arctic Europe, Asia, and America, 
not reaching southward of northern Germany. Very rare in Britain, 
having been formerly found in Scotland, and more recently in the moors 
round Oakmere, in Cheshire, in Caithness, and a variety, Hooker, Syme, 
about Lough Neagh, in Ireland. £7. summer, 
XVII. ATRA, AIRA. 
Very near Avena in all essential characters, but the spikelets are much 
smaller, usually with two flowers only or rarely a single one, the flowering 
glumes thinner and more scarious, not projecting beyond the outer glumes, 
and the hair-like awn on their back much shorter than in Avena. 
The species are few, chiefly European and north Asiatic, a very few ex- 
tending into North America, or reappearing in the southern hemisphere. 
Panicle very loose, with capillary, spreading branches. 
Stems 2 to 4 feet high. Leaves in large tufts, flat and rough. 
Awns shorter than the glumes . : . . 1, A. cespitosa, 
Stems ] to 1} feet. Leaves rolled in on the edges. Awns pro- 
jecting from the outer glumes 2. A. flexuosa. 
Stems 4 to 6 inches. Leaves fine and short. Awns shortly 
; protruding ‘ 5. A. caryophyllea, 
Panicle dense and narrow. Stems 3 to 6 inches. 
Spikelets about 2 lines long. Awns thickened at the top, 
shorter than outer glumes . ° : . : 5 . 38. A. canescens, 
Spikelets rather more than 1 line. Awn hair-like, shortly 
protruding § °. 4 te ke . SA <a . 4, A. precox, 
1, A. czespitosa, Linn. (fig. 1189). Tufted Aira.—A tall perennial, 
forming large, dense tufts, with rather stiff, flat leaves, very rough on the 
upper surface. Stems 2 to 4 feet, bearing an elegant panicle 6 inches to 
near a foot long, with spreading, slender, almost capillary branches, 
Spikelets silvery-grey or purplish, about 14 lines long. Outer glumes 
rather unequal, lanceolate and pointed. Flowering glumes scarcely pro- 
jecting from the outer ones, minutely toothed or jagged at the top, with a 
fine, hair-like awn inserted near their base, and not so long as the glume 
itself. Deschampsia cespitosa, Beauv. 
In moist, shady places, throughout Europe, from the Mediterranean to 
the Arctic regions, and the temperate and mountain regions of the northern 
and southern hemispheres. Abundantin Britain. Fl.swmmer. A. alpina, 
R. and S., is a variety which in its least altered form only differs in its 
lower stature, with shorter leaves, with the glumes more or less enlarged, 
the awn adhering to it so much the higher as the glume is more altered. 
In the commoner state the whole panicle is viviparous, all the glumes 
