214 THE WHEAT PLANT 



Ear, 5-6 cm. long, 8-10 mm. across the face, 13-15 mm. across the side; 

 awns 7-9 cm. long ; spikelets 21-23 ; D = about 40. 



Empty glitme, 10 mm. long, apical tooth acute. 



Grain, flinty, dorsal ridge prominent ; 7-5 mm. long, 3-5 mm. broad, 3-3 

 mm . thick. 



8. Derived from an Austrian ear of T. vulgare, grown at Reading, is a dense, 

 short-eared form. (? a hybrid with T. monococcum grown in an adjacent row.) 



Young shoots, erect ; young leaves glabrous. 



Straw, tall, 127 cm. (about 50 inches) long; upper internode solid. 



Ear, short, very dense with narrow face ; 5-7 cm. long, 8-10 mm. across the 

 face ; 0=43-47 ; awns 13 cm. long. 



Empty glume, 9 mm. long ; apical tooth narrow, acute, 1-5-2 mm. long. 



Grain, flinty, much compressed laterally, 1-7 mm. long, 2-75-2-8 mm. broad, 

 3-5 mm. thick. 



Ear bearded ; glumes white, glabrous ; awns white ; grain red. 



T. durum, var. affine, Korn. Handb. d. Getr. i. 70 (1885). 



A widely distributed variety cultivated in Spain, Portugal, Italy, and North 

 Africa. Found also in small amounts in European Turkey, Russia (the Don 

 Provinces), Transcaucasia, Turkestan, and Asia Minor. I have also had a form 

 of it from Burma. 



The majority of the forms have somewhat slender, lax ears about 9 cm. long, 

 and almost square in section ; a few possess shorter, denser, compressed ears. 



1 . The form from Burma is not far removed from forms of T. dicoccum 

 and has the following characters : 



Ear, narrow, lax, about 8 cm. long, almost square in section, 9-10 mm. 

 across the face and side ; spikelets 19-21 ; = 23-26 ; awns 15 cm. long (Ear 

 type 2, Fig. 142). 



Empty glume, n mm. long, narrow, with acute apical tooth (n, Fig. 138 ; 

 2, Fig. 142). 



Grain, semi-flinty, small, narrow, about 8 mm. long, 3 mm. wide, 3 mm. 

 thick. 



Yiaf boyde from Asia Minor is similar. 



2. Trimenia. An ancient and widely distributed form, cultivated in Spain, 

 Portugal, Italy, and North Africa. A form received from Italy under the name 

 Risciola is similar, as is also Trigo Obispado from Spain. 



Young shoots, erect ; young leaves glabrous. 



Straw, short, 86 cm. (about 34 inches) long ; upper internode hollow or solid. 



Ear, lax, somewhat slender, 9-10 cm. long, square, 10-12 mm. across the 

 side; spikelets 22-24, 2 ~ to 3-grained; 0=24-26; awns 13-16 cm. long (Ear type 

 2, Fig. 141). 



Empty glume, 9-10 mm. long ; apical tooth narrow, acute, 1-5-2 mm. long 

 (6, 9, Fig. 138). 



