196 THE WHEAT PLANT 



Ear bearded ; glume red, glabrous ; grain red. 



T. dicoccum, var. rufescens, mihi. 



Received from Abyssinia in a sample of Nach Sinde. 



Young shoots, erect ; young leaves pubescent. 



Straw, very slender, short, hollow with thick walls. 



Ear, narrow, lax, 7-8 cm. long, square, 8-10 mm. across the sides ; spikelets 

 14-18 ; D = about 25. Awns slender, spreading somewhat, 9-10 cm. long (Ear 

 type 2, Fig. 130). 



Empty glume, 9-10 mm. long, keeled throughout ; apical tooth short, blunt ; 

 secondary notch distinct (5, Fig. 125). 



Grain, flinty, with blunt apex, " brush " short, dorsal hump prominent ; 

 7-75 mm. long, 3-45 mm. broad, 3-3-3-4 mm. thick. 



Ear bearded ; glumes red, glabrous ; grain purple. 



T. dicoccum, var. Schimperi, mihi. 



T. durum, var. Schimperi, Korn. Handb. d. Getr. i. 71 (1885). 



Kornicke states that this purple-grained variety was sent from Abyssinia by 

 Schimper in a mixed sample of var. Arraseita, which it resembles in all its 

 characters except the colour of its glumes. 



Ear bearded ; glumes dark brown or mottled, pubescent. 

 T. dicoccum, var. persicum, mihi. 



Persian Black Wheat (Ear type i, Fig. 130). A remarkable wheat obtained 

 from Haage and Schmidt, Erfurt, Germany ; very late, not coming into ear at 

 Reading until the second or third week in June. It has been described as a 

 variety of T. vulgare, var. fuliginosum, but its 3- to 4-nerved coleoptile, 

 pubescent, grass-green leaves, slender thick-walled or solid straw, narrow rachis, 

 and general form of ear place it near the Abyssinian Tukur Sinde (p. 195). 



Vavilov found it perfectly immune to Erysiphe graminis, and in this respect 

 quite unlike 580 sorts of T. vulgare which he tested at the same time. 



The hybrid (F x ) with T. vulgare is almost sterile. 



Young shoots, erect ; young leaves pubescent. 



Straw, thin, of medium height, 104 cm. (about 42 inches), solid or hollow 

 with thick walls ; nodes hairy. 



Ear, very lax, narrow, 9 cm. long, square, 10 cm. across the sides ; spikelets 

 2- to 3-grained, 19-20 ; D = about 20. 



Empty glume, with a long awn 3-4 cm. long (7, Fig. 125). 



Flowering glume, white below, dark brown above, with awn 8-n cm. long. 



Grain, flinty, reddish ; apex blunt ; 6-5 mm. long, 3 mm. broad, 2-9 mm. 

 thick. 



GROUP II. EUROPEAN EMMERS. 

 Ear bearded ; awns short ; glumes white, glabrous. 



T. dicoccum, var. tricoccum, Korn. Handb. d. Getr. i. 86 (1885). 



T. tricoccum, Schubl. Char, et descr. Cer. 33 (1818), and Flora, 445 (1820). 



