MACARONI WHEAT 227 



show affinities with T. turgidum or T. vulgare. The ears are chiefly of two types : 

 (i) very long, lax, and square in section, and (2) short, dense, compressed ears. 



1 . A form from Spain, showing affinities with T. vulgare. 

 Young shoots, semi-erect ; young -leaves slightly pubescent. 



Straw, of medium height, 95-100 cm. (about 36-38 inches) high ; upper 

 internode hollow. 



Ear, 8-10 cm. long, square, 10-12 mm. across the sides ; spikelets 22-25, 

 3-grained ; D = 25-27 ; awns 13-14 cm. long (Ear type i, Fig. 142). 



Empty glume, 8-10 mm. long ; apical tooth acute, 1-5-2 mm. long (5, Fig. 



138). 



Grain, pale red, flinty, 7-5-8-5 mm. long, 3-3 mm. broad, 3-4 mm. thick. 



2. Spanish Form. 



Young shoots, semi-erect ; young leaves glabrous. 



Straw, of medium height, 95-100 cm. (38-40 inches) high ; upper internode 

 solid. 



Ear, short and dense, 6 cm. long, compressed, 13-14 mm. across the face, 

 17-20 mm. across the sides ; spikelets 21, 3- to 4-grained ; D = 38 ; awns 15-16 

 cm. long (Ear type 2, Fig. 145). 



Empty glume, 10-11 mm. long; apical tooth narrow, 1-5-2 mm. long (4, 

 Fig. 138). 



Grain, flinty, long, and pointed at the apex, 9-4 mm. long, 3-3 mm. broad, 

 3-8 mm. thick. 



Ear bearded ; glumes blue-black, glabrous ; grain white. 



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



In some seasons the glumes are a dark reddish tint. 



A comparatively rare variety received from Spain and Morocco, and recorded 

 by Flaksberger as of casual occurrence in South Russia. 



Spanish Form. 



Young shoots, erect ; young leaves glabrous. 



Straw, tall, 135 cm. (about 53 inches) high ; upper internode hollow. 



Ear, somewhat lax, 9 cm. long, square, 12-14 mm. across the sides ; spikelets 

 23, 3- to 4-grained ; = 27 ; awns 15-17 cm. long (Ear type 2, Fig. 141). 



Empty glume, 10-11 mm. long ; apical tooth narrow, acute, -5-1 mm. long (4, 

 Fig. 138). 



Grain, flinty, with high dorsal ridge and blunt apex ; 8-25 mm. long, 3-65 

 mm. broad, 3-8 mm. thick. 



Ear bearded ; glumes blue-black, glabrous ; grain red. 



T. durum, var. obscurum, Korn. Handb. d. Getr. i. 72 (1885). 

 A rare variety received by Kornicke from Spain. 



Ear bearded ; glumes blue-black, pubescent ; grain white. 



T. durum, var. coerulescens, Korn. Handb. d. Getr. i. 73 (1885). 

 The hairs on the glumes are usually few and inconspicuous. In some seasons 



r 



