CLASSIFICATION 157 



Grain, usually mealy, short and narrow, somewhat pointed at the apex ; 

 dorsal hump prominent. 



RACE VIII. Triticum vulgare, 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 longitudinal ridges. 



Straw, hollow with thin walls, though forms are occasionally found with 

 solid upper internodes. 



Ear, bearded or beardless, square in section or more commonly broader 

 across the face than the 2-rowed profile, bearded or beardless ; the awns shorter 

 than those of T. durum or T. turgidum ; 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 form 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. turgidum. 



RACE X. Triticum sphaerococcum, 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. 



Ear, bearded or beardless, stiff, erect, 4-6 cm. long, not so dense as T. com- 

 pactum ; awns of bearded forms shorter and stouter than those of T. com- 

 pactum ; rachis tough ; length and breadth of the spikelets about equal. 



Empty glume, broad and short, inflated, with strong curved scabrid apical 

 tooth. 



Grain, very short (4-5 mm. long), flinty, often angular on account of pressure 

 of the glumes. 



