IIORTUS GRAMINEUS WOBURNENSIS. 71 



exterior valve ventricose, obtuse, with a point oi an awn; 



tiic interior valve flat ; seed ovate, oblong, at both ends 



obtuse, convex on one side and furrowed on the other. 

 TRITICUM caninum, per. bearded perennial wheat-grass, 



indig. July. 

 glaiicesceus, per. glaucous pilose-leaved, indig. 

 elongatum, per. long-spiked, nat. Germany. July. 

 Junceum, per. rush-leaved, indig. July. Agropi/riimjun- 



ceum. 

 cristatum, per. crested wheat-grass. July. 

 loliaceum, ami. darnel-like wheat-grass, indig. June and 



July. 

 teuellum, aim. dwarf wheat-grass, nat. Spain. July. 

 astivum, ami. spring wheat, nat. unknown. 

 hybermtm, ami. Lammas wheat, nat. unknown. 



1. var. muticmn, ami. red Lammas wheat, nat. unknown. 



2. var. spica et granis ruhentibus, red, or Kentish wheat. 



3. var. spica et granis albis, white wheat. 



4. var. aristis munitum, red-cared bearded wheat. 



5. var. album, white-eared bearded wheat. 



In R. S. Linn. Sys. Veg. the following arrangement of the 

 varieties of triticum astivum occurs. 

 \. Varieties with smooth ears and awnless spikelets or ears. 

 a. Trit. vulgare aiitumnale, with white spikes and yellow 

 corn. 



b. , with yellowish red cars and 



yellow corn, grain larger than in var. a. 

 c. a. Trit. vulgare autumnale, with white ears and white 

 o;rain, seed almost round. 



c. b. Trit. vulgare autumnale, with longer and more trans- 



parent grain. 



d. a. Trit. vul. vernum, spike yellowish-red, smaller than 



var. b. 



d. b. , with grain much larger, culms more 



slender. 



e. a. Trit. vulg. vernum, spike short, four-angled, reddish- 



brown. 

 e. b. • >" — — , spike whitish. 



