CL. III.] TKIANDRIA DIGYNIA. 69 



** Several spikes on each stem, 



3. E. angustifolium. Common Cotton-grass. Stem somewhat trian- 

 gular ; leaves linear ; channelled ; spike-stalks smooth ; hairs four 



. times the length of the spike. Root creeping : stems from two to 



three feet high, jointed, and leafy: spikes generally four, of which 

 one is sessile: leaves very narrow, triangular, rough on the edges. 

 Perennial : flowers in April : grows on wet heaths, in peat bogs and 

 ditches: common. Enff.Bot.vol. viii.pl. 564. .Efoy. Fl. vol.i.p.69. 93. 



4. E. polystdchion. Broad-leaved Cotton-grass. Stem round ; 

 leaves broadly linear, flat ; stalks of the spike smooth ; hairs three 



times the length of the spike. Root fibrous : stems two feet high, 



grooved, jointed, and leafy: leaves broader than in the last, with an 

 acute keel : spikes four or five, one sessile, brown, pendulous after 

 flowering. Perennial : flowers in June : grows on wet heaths and 

 in peat bogs : common in Scotland. Eng. Bot. vol. viii. pi. 563. 

 Eng. FL vol. i. p. 68. 94. 



5. E. pube'scens. Downy-stalked Cotton-grass. Stem triangular 

 above, round below; leaves flat, lance-shaped; spike-stalks rough; 



hairs twice the length of the spike. Smaller than the last: spikes 



numerous, black, their stalks downy: leaves broader arid shorter 

 than in the last. Perennial : grows in bogs and marshes : common 

 in Scotland ; rare in England and Ireland. Eng. Bot. Suppl. pi. 2633. 

 Eng. Fl.voli. p. 69. 95. 



6. E. grdcile. Slender Mountain Cotton-grass. Stem triangular ; 

 leaves triangular, channelled, leafy; fruit-stalks downy; hairs twice 



the length of the spike. Root creeping : stem a foot high . leaves 



linear, triangular, recurved : spikes three or four, nearly erect, 

 longer than their bractea, black. Perennial : flowers in July : 

 found in boggy places on BenLawers and the Clova mountains, by 

 G. Don. North Wales. Eng. Bot. vol. xxxiv. pi. 2402. . Eng. Fl. 

 vol. i. p. 70. 96. 



12. NA'RDUS. MAT-GRASS. 



Calyx none. Corolla of two lance-shaped pointed husks, the 

 outer embracing the inner. Filaments hair-like; anther ob- 

 long. Germen superior, oblong, small. Style thread-shaped, 

 long ; stigma feathery. Seed one, long and narrow, pointed at 

 both ends, invested with the husks. Name from nardos of the 

 Greeks. 28. 



1. N. stric'ta. Mat-grass. Spike slender, straight, the flowers 



pointing in one direction. Root consisting of very long tough, 



downy fibres : stems numerous, about six inches high, wiry: leaves 

 bristle-like : numerous broad stiff sheaths around the base of the 

 stems. This grass forms dense tufts, and is of a pale greyish green 

 colour. Perennial : flowers in June and July : grows on heaths, 

 generally in sandy or gravelly soil : abundant. Eng. Bot. pi. 290. 

 Eng. Fl. vol. L p. 70. 97. 



DIGYNIA. 



[This order contains all the British Grasses, excepting Nardus 

 stricta and Anthoxanthum odoratum. The grasses, as every person 

 must have observed, form the basis of all our best pastures ; and 

 in some places, certain species, such as Festuca ovina and durius- 



