44 TRIANDRIA — DIGVNIA. [Festltca. 



37. Dactylis. Li?in. Cock's-foot-grass. 



1. D. glomei-dta, h. (rough Cock's-foot-grass); panicle crowded 

 secund, cor. acuminate somewhat awned. E. Hot. f. 335. 



Way-sides, me-idows, and woods, abmidaiit. Fl. July. If. — 1 — 2 

 feet high. Leaves rather broadly linear, acuminate, scabrous. Panicles 

 secund. Spikelets of 3 — 4 tior'ets, thickly clustered ou tlie branches, 

 clusters ovate. Valves of the cal. membranous, smaller tlian the cor., 

 lanceolate, acuminate, unequal, glabrous, scabrous at the back of the 

 valves, which are more or less obliquely keeled. Ext. valve of cor. sub- 

 cartilaginous, lanceolate, much compressed, scabrous, ribbed, ciliated at 

 the keel, with a short awn at the point: iut. bifid at the extremity. — 

 Said to be advantageously cultivated for cattle. 



38. Cynosurus. Linn. Dog's-tail-grass. 



1. C. cristdtus, L. (crested Dog" s- tail-grass) ; raceme spiked 

 linear, florets with a very short awn. E. Bot. t. 316. 



Dry pastures, frequent. Fl. July. "U . — 1 — H foot high, slender. 

 Leaves narrow, linear, acuminate, llacetne secund. Lnvohicres beauti- 

 fully pectinated, one at the base of each spikelet, their divisions linear, 

 acute, greenish, subglumaceous, a little curved, rough. Spikelets 3 — 5- 

 flowered. Cal. valves lanceolate, nearly equal, membranous, rough at 

 the keel, as long as the floret. Ext. valve of cor. lanceolate, obscurely 

 nerved, green, scabrous, especially at the keel, terminating in a short 

 rough awn ; int. white, bifid, pubescent at the angles of the fold. — A 

 valuable grass. 



2. C. echi?idtns, h. (rough Dog' s-tail-grass); raceme in an ovate 

 spike, florets with awns as long as the cor. E. Bot. t. 1333. 



Sandy sea-shores of the extreme south of England, as Kent and Sus- 

 sex ; but principally in Jersey. Fl. July. 0. 



39. Festuca. Linn. Fescue-grass. 



1. F. ovina, L. (Sheep's Fescue- grass) ; panicle subsecund 

 subcoarctate, spikelets oblong of about 4 — 5 florets with short 

 awns, culms square upward, leaves setaceous. E. Bot. t. 585. — 

 jS. (Sm.) rubra; panicle purplish. F. rubra. With. — y. (Sm.) 

 ccesia ; plant glaucous. E. Fl. — F. ccBsia, E. Bot, t. 1917. — 8. 

 (Sm.) temdfoUa ; leaves longer and very slender more numer- 

 ous, florets acuminate awnless. F.tenuifolia, Sibth. — e. vivipara; 

 plant taller, florets viviparous. F. ovina, (3. Linn. Hook. — y. 

 Schrad F. vivipara, E. Bot. t. 1355. E. Fl. v. i. p. 140. 



Abundant on dry elevated j)astures. — £. Frequent on the mountains 

 of Wales and Scotland. Fl. June, July. If.. — Leaves mostly short, often 

 curved, smooth, or slightly scabrous, much tufted and affording excel- 

 lent food for sheep. Culm 4 — 8 inches or a foot high, in the upper 

 part more or less distinctly 4-sided. Cal. valves much shorter than the 

 cor., acute, subglabrous. Cur., ext. valve more or less glabrous, some- 

 times pubescent upward or even hairy, {,F. hirsuta. Host,) terminated 

 by an awn, which, though varying in size, and in S. obsolete, at the ut- 

 most dota not exceed half the length of the valve. Whole plant more 

 or less glaucous and having a ])urple tint in the spikelets. F. vivipara, 

 Sm. affor<is no character by which it may be distinguished from F. ovina. 



