TRIANDRIA— DIGYNIA. Avena. 165 



Corolla with a purple stain. Glumes all shining and pellucid at 

 the summit. Awn brown, rough, from the middle of the valve, 

 twice as long as the calyx. Styles very short. 



4. A. pratensis. Narrow-leaved Oat-grass. 



Panicle erect, with very short simple branches. Florets 

 about five, longer than the calyx. Partial stalk all over 

 hairy. Leaves involute, finely serrated, naked ; sheaths 

 smooth. 



A. pratensis. Linn. Sp. PL 119. Willd. v. 1 . 45 ! . Fl. Br. 1 1 9. Engl. 



Bot.v. 17.*. 1204. Knappt.9\. Hook. Scot. AS. Sincl.20\. 



Schrad. Germ. v. 1 . 385. Host Gram. v. 2. 38. t. 5 1. Leers 43. 



t.O.fl. 

 A.bromoides. Linn. Sp. Pl.\6C)6. H r illd.v.\Ab3. Gouan Hort. 52. 

 A. n. 1499. Hall. Hist. v. 2. 234. 

 Gramen avenaceum montanum, spied simplici, aristis recurvis. 



Rail Syn. 405. t. 21./. 1. ed. 2. 252. n. 2, * 345. 

 G. avenaceum angustifolium alpinum, spicata panicula, ex pur- 



pureo, viridi, et argenteo variegatfi. Scheuchz. Agr. 230. 

 G. avenaceum alpinum glabrum angustifolium, locustis aristatis, 



in spicam dispositis. Ibid. 228. t. 4.f. 21, 22. 



In dry chalky, or limestone, pastures, and heathy spots. 



Perennial. July. 



Root fibrous, tufted, downy. Stem 12 or 18 inches high, erect, 

 stiff, with one joint near the bottom, from which originates the 

 very long smooth sheath of the short uppermost leaf, investing 

 the greater part of the stem. Most of the leaves are radical, 

 tufted, rigid, finely serrated at their involute margins j their 

 sheaths broad, smooth, durable. Panicle erect, resembling a 

 spike, many of the upper spikelets being sessile. Calyx-valves 

 narrow, 3-ribbed. Florets 4 or 5, the outer valve roughish, 

 ribbed, purplish, with a membranous point, often torn. Awn 

 from above the middle, purplish, with a white tip. Inner valve 

 finely fringed. Nectary much longer than the germen. Styles 

 scarcely any. Stigmas oblong, feathery. Hairs of the common 

 stalk, or receptacle, shorter than in the last. 



5. A. alpina. Great Alpine Oat-grass. 



Panicle erect, slightly branched. Florets about five, longer 

 than the calyx. Partial stalk bearded under each. Leaves 

 flat, minutely serrated, naked; sheaths rough. Root 

 fibrous. 



A. alpina. Sm. Tr. of Linn. Soc. v. 10. 335. 

 A. planiculmis. Engl. hot. v. 30. t. 2141. Comp. 20. Hook. 

 Scot. 43 3 but not Schrad. Germ. v. 1. 381. t. 6.f. 2. 



