TRIAND. DIGYN. 45 



Except the fibrous roots and long awns, it is difficult to point out a 

 mark to distinguish this from the foregoing species. In its fructifi- 

 cation, and that of Tr. caninum and Tr.junceum, the varieties are 

 so numerous that it is scarcely possible to draw the line of discri- 

 mination. 



4. Tr. cristatum (crested Wheat- grass}, valves of the cal. sub- 

 ulate keeled aristate scarcely nerved of about 4 awned flowers, 

 spikelets much crowded. E.B. t. 2267. 



HAB. Sea-side between Arbroath and Montrose, G. Don. FL July. I/ . 



Culm 1 foot or more high, pubescent upward. Leaves linear, acu- 

 minated, hairy on the upper surface. Spike dense, oblong, al- 

 most 4-sided. Spikelets very regularly distichous, standing out 

 nearly horizontally, lanceolate. Cal. valves small, subulate, awned. 

 Outer valve of the cor. lanceolate, longer than its awn. A rare 

 Grass, very little known even on the continent. 



** Spike secund. 



5. Tr. loliaceum (spiked Sea Wheat-grass], valves of the cal. 

 indistinctly 3 -nerved obtuse of many awnless flowers, root 

 fibrous annual. E. B. t. 221. 



HAB. Sea-coast, Angus-shire, G. Don. Shore of the Isle of May and 

 Firth of Forth, plentiful, D.Don. Walls, Caroline Park; and 

 rocks east of Granton, and west pier of Burntisland, Edinb., Mr. 

 Arnott. Pettycur, Fifeshire, abundant, Mr. Greville. Fl. June, 

 July. 0. 



Singularly stiff and wiry, equally so with Poa rigida. 3 4 inches high. 

 Leaves linear, rigid, plane. Spikelets more or less distant, secund, 

 on very short footstalks j lower ones sometimes 2 3 together. 

 Ext. valve of the cor. broadly ovate, concave. 



28. LOLIUM. 



1. L. perenne (perennial Darnel or Rye-grass), spikelets much 

 longer than the cal., florets awnless linear-oblong compressed, 

 root perennial. Lightf.p.\Q7* E..t.3\5. 



HAB. Way-sides, pastures and waste places, abundant. Fl. June. 



July. I/ . 

 One to one foot and a half high. Spike with the habit of Triticum 



rep., sometimes from luxuriance compound. Florets linear-oblong, 



nerved. 



2. L. arvense (annual Darnel), spikelets about as long as the 

 calyx, florets elliptical with very short soft awns, root annual. 

 E. B. t. 1125. 



HAB. Forfar, and fields Angus-shire, G. Don. Fl. July. 0. 

 Very nearly allied to the following species. 



3. L. temulentum (bearded Darnel), spikelets shorter than 

 the cal., florets elliptical about as long as the rigid awn, root 

 annual. Lightf. p. 107. E. B. t. 1 124. 



HAB. Corn-fields, but not common, Dr. Parsons. Corn-fields occa- 

 sionally about Glasg., Hopk. Fl. Aug. 0. 



