228 THE WHEAT PLANT 



the empty glumes of most forms are dark reddish tint with a black stripe along 

 the outer margins. Kornicke obtained samples of this variety from Spain. 

 Italy, Upper Egypt, and Chili. 



Flaksberger records its occurrence in S. and S.E. Russia, Transcaucasia, 

 Siberia, and Turkestan, and Asia Minor, Turkey (Adrianople). 



I have had specimens from Russia. 



1. Received from Semipalatinsk, Russia, and in commercial " Hard Tagan- 

 rog." 



Young shoots, erect ; young leaves glabrous. 



Straw, tall, slender, 132 cm. (about 52 inches) long ; upper internode hollow. 



Ear, lax and square, 8-9 cm. long, 10-12 mm. across the sides ; spikelets 

 20-23,3- to4-grained; = 26-28; awns 14-15 cm. long (Ear type i,Fig. 142). 



Empty glumes, 10-11 mm. long ; apical tooth narrow, acute, 1-1-5 mm - l n g 

 (8, n, Fig. 138). 



Grain, flinty, with narrow apex, 8-5 mm. long, 3-5 mm. broad, 3-5 mm. thick. 



2. Kara Bashak from Adrianople and Arab boyd from Asia Minor are 

 forms of coerulescens with compressed ears, 6-7 cm. long (Ear type 2, Fig. 144). 



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



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



The glumes are only slightly pubescent, and the hairs easily overlooked as 

 in the previous variety. 



Kornicke's type was collected by P. Ascherson in the oasis Merdisheh in the 

 Libyan Desert (1876) ; the native name is "Tuedi." 



Flaksberger records the rare occurrence of var. libycum in the Samara Pro- 

 vince, Russia. 



I have received forms of it from Morocco, Spain, Portugal, and Bulgaria. 



1. Morocco Form. 



Young shoots, erect ; young leaves glabrous. 



Straw, of medium height, 106 cm. (about 42 inches) long ; upper internode 

 solid. 



Ear, 7-8 cm. long, square, 11-13 mm - across the sides ; spikelets 17-20, 3- to 

 4-grained ; D = 28-30 ; awns stout and very long, some of them reaching a length 

 of 23 cm. (Ear type 2, Fig. 138). 



Empty glume, 11-13 mm - l n g '> apical tooth acute, curved, 1-2 mm. long 

 (4, Fig. 138). 



Grain, flinty, 8-2-8-6 mm. long, 3-3-4 mm. broad, 3-3-4 mm. thick. 



2. Madonna. Received from Haage and Schmidt, Erfurt, Germany. 

 Young shoots, semi-erect ; young leaves glabrous. 



Straw, very tall, 150 cm. (about 60 inches) high ; upper internode hollow 

 with thick pithy walls. 



Ear, dense, 7-8 cm. long, square, 11-13 mm - across the sides, or compressed, 

 10-12 mm. across the face, and 14-15 mm. across the side ; spikelets 26, 3- 

 to 4-grained ; D = 33-34 ; awns 15-17 cm. long (Ear type 2, Fig. 143). 



