216 THE WHEAT PLANT 



The awns are brown or black, and a dark line is usually present along the 

 upper part of the keel and edges of the empty glumes. The latter are large, 

 generally with long, acute, apical teeth. 



1. Trigo Macolo. Received from Spain. 

 Young shoots, erect ; young leaves slightly rough. 



Straw, of medium height, 100 cm. (about 39 inches) long ; upper inter- 

 node solid. 



Ear, 8-5-10 cm. long, square, 12-13 mm. across the side ; spikelets 22-24, 

 2- to 3-grained ; D = 29-32 ; awns 17-18 cm. long (Ear type 2, Fig. 143). 



Empty glume, 10-11 mm. long ; upper part of apical tooth usually black ; 

 apical tooth acute, broad at the base, 1-5-2 mm. long (6, Fig. 138). 



Grain, mealy, with truncate apex ; 8 mm. long, 3-85 mm. broad, 3-65 mm. 

 thick. 



Similar are Trigo de espiga azulada and Trigo Alonso from Spain ; in 

 these the empty glume has a narrow, longer, apical tooth. 



2. Trigo Chacon. Received from Spain. 

 Young shoots, erect ; young leaves glabrous. 



Straw, of medium height, 110-115 cm. (about 40-42 inches) high ; upper 

 internode solid. 



Ear, coarse, stout, short, and dense, 6-8 cm. long, square, 15 mm. across the 

 sides; spikelets broad, 20-22, 3- to 4-grained ; = 30-32; awns stout, 13-14 cm. 

 long (Ear type i, Fig. 143). 



Empty glume, 11-12 mm. long ; apical tooth acute, 2 mm. long (4, Fig. 138). 



Grain, large, semi-flinty, 8-8-9 mm - l n g> 3'8-3'9 mm. broad, 4 mm. thick. 



Very similar is Trigo Cannu altu from Spain and Italy. 



3. T. raspinegro de espiga pequefia. Received from Spain. 

 Young shoots, semi-erect ; young leaves with few short hairs. 



Straw, of medium height, 102 cm. (about 40 inches) long ; upper inter- 

 node solid. 



Ear, short, dense, often convex on one side ; 6-6-5 cm - l n g> IO mm - across 

 the face, 17 mm. across the side ; spikelets 23-24, 2- to 3-grained ; 0=44 ; 

 awns 13-14 cm. long (Ear type i, Fig. 145). 



Empty glume, 10 mm. long ; apical tooth narrow, acute, 2 mm. long (6, 

 Fig. 138). 



Grain, flinty, 8-7 mm. long, 3-85 mm. broad, 3-6 mm. thick. 



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



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



First obtained by Kornicke from the Dresden Botanic Garden as " Triticum 

 meianocus " (? melanocus), and later from the Province of Cadiz in Spain. 



A somewhat uncommon variety received from Spain, Greece, and Asia 

 Minor ; Flaksberger mentions its rare occurrence in Russia (the Don Pro- 

 vinces and Caucasus) and in Turkestan. 



i. Trigo raspinegro. Received from Spain. 



Young shoots, erect ; young leaves slightly rough. 



