WHHAT. 233 



Grain, usually mealy, short and narrow, somewhat pointed 

 at the apex, dorsal hump prominent. 



Eace VIII. — Triticum vulgar e. Host. Bread Wheat. 

 Coleoptile, 2-nerved. 



Young shoots, erect, semi-erect or prostrate ; young leaves 

 more or less hairy, the hairs of unequal length, with a single 

 row of long ones along the summit of some or all the longitudi- 

 nal ridges. 



Straw, hollow with thin walls, though forms are occasion- 

 ally found with solid upper internodes. 



Ear, bearded or beardless, square in section or more com- 

 monly broader across the face than the 2-rowed profile ; the 

 awns shorter than those of T. durum or T. turgidurn ; some 

 entirely beardless, others classed as beardless have awns of 

 variable length on the upper spikelets ; spikelets usually about 

 as long as broad ; rachis tough. 



Empty glume, broad, the outer face convex, keeled from 

 tip to base or in the upper half only ; apical tooth in the bearded 

 forms short, acute, or sometimes prolonged into an awn (1-4 

 cm. long), in the beardless forms usually short and blunter. 



Grain, very varied in forms and size; flinty or mealy; 

 usually plump with bluntish apex, rounded on the dorsal side 

 without prominent hump or ridge. 



Race IX. — Triticum compactum, Host, Club Wheat. 

 Coleoptile, 2-nerved. 



Young shoots, leaves, straw and glumes as in T. vulgare. 



Straw, hollow, very variable in length. 



Ear, bearded or beardless, short and dense from 3*5 to 

 6 cm. long, density 40-50; spikelets broad and short, often 

 containing 3-4 grains; rachis tough. 



Empty glume, as in T. vulgare. 



Grain, generally soft and mealy, plump, small, variable in 

 shape, some with prominent dorsal hump like those of T. 

 turgidurn. 



Race X. — Triticum sphcrrocoecum , mihi. Indian Dwarf 

 Wheat. Coleoptile 2-nerved. 



Young shoots, erect; young leaves as in T. vulgare. 



Straw, very short, stiff, erect, and hollow, usually not 

 more than 65-70 cm. long except where irrigated; culm leaves 

 rigid and somewhat erect. 



