184 TRIANDRIA— DIGYNIA. Tiiticum. 



3. T. caninum. Fibrous-rooted Wheat-grass. 



Cal}Tc-valves somewhat awiied, with three or five ribs. 

 Florets Ibiir, awned. Leaves flat. Root fibrous. 



T. caninum. Uik^^s. 5S. FL Br. 15D. Engl. Bat. v. 20. t. 13/2. 



Knappt. 112. Hook. Scot. 44. Sincl. 03. Schrad. Germ. v. 1. 389. 



Host Gram. v. 2. 20. t. 25. Fl. Dan. t. 1447. 

 T. n. 58. Gmel. Sib. v. 1. 122. t. 27. 

 T. n. 1429. Hall. Hist. v. 2. 212. 

 Elvmus caninus. Lin7i. Sp. Fl. 124, IVilld. v. 1. 469. Leers 46. 



V. 12./. 4, 2. Ehrh.Phyt.72. 

 Gramen spica triticea compacta, aristis longioribu.s. Scheuchz. 



Agr. 10. 

 G. caninum aristatum, ratlice non repente, svivaticum. Rail 



Syn. 390. 

 G. caninum non repens, elatius, spica aristata. Moris, r.3. 177. 



sect. 8.t.l.f.2. Buxb. Cent. 4. 29. ^.50. 



In woods, and shady liedges, on a chalky, or limestone, soil. 



Perennial. July. 



Boot of several downy stout fibres, not at all creeping. Sicins 2 

 feet high, leafy, round, minutely striated, very smooth. Leaves 

 nearly upright, lanceolate, taper-pointed, thin, flat, bright green, 

 rough on both sides ; sometimes hairy. Sheaths of the lower 

 ones only hairy. Stipula very short. Spike 3 or 4 inches long, 

 a little inclining, close. Spikelets alternate, except the lower- 

 most, which sometimes stand in pairs, side by side. Calyx lan- 

 ceolate, with 3, sometimes 5, stout, smooth, very neat, ribs ; 

 the keel being not rough as represented in Engl. Bot., though 

 the short terminal awn is sometimes so. Outer valve of the co- 

 rolla ribbed at the top only, with a much longer, rough own 

 from the keel ; inner valve fringed. 



The fibrous root distinguishes this species from every variety of the 

 last, 



4. T. cristatum. Crested Wheat-grass. 



Calyx-valves elliptical, awned, keeled, obscurely ribbed. 

 Florets awned. Spikelets closely imbricated, depressed, 

 straight. Stems simple. 



T. cristatum. Schreb. Gram. v. 2. 12. t. 23. f. 2. Engl. Bot. v. 32. 



^2267. Comp. 22. Hook. Scot. 45. Bieberst. Taur.-Caucas. 



V. 1. 87. Host Gram. v. 2. 19. t. 24. 

 Bromus cristatus. Linn. Sp. PI. 115. TFilld. v. 1.439. 

 Festuca n. 51. Gmel. Sib. v. 1. 1 15. t. 23. 

 Gramen triticeum, spica latiore compacta. Buxb. Ce?if. ]. 32. 



t.50.f.3. 

 On the eastern coast of Scotland, very rare. 



