236 THE WHEAT PLANT 



Straw, tall, 120 cm. (about 48 inches) high, erect, striated, and solid ; leaves 

 15-20 cm. long, 1-5 cm. wide. 



Ear, usually very dense, but sometimes laxer, 7-5-10 cm. long, quadrate, 

 generally tapered towards the apex, but occasionally broader upwards ; spike- 

 lets 14-16, 2-5 cm. long, 1-25 cm. wide, 2- to 3 -grained ; awns i or 2, 1-5-5 cm - 

 long. 



Empty glume, 2-5 cm. long, glabrous, with 5 nerves on the broadest half ; 

 apical teeth two, the outer larger than the inner one. 



Grain, 1-25 cm. long, greyish-white, pointed, flinty, the surface wrinkled. 



Glumes white, glabrous : ear long, flattened, compact ; awns short. 

 T. polonicum, var. elongatum, Korn. Handb. d. Getr. i. 102 (1885) 

 T.polonicum compactum, var. L., Ser. Cer. eur. 148 (186) (1841). 

 A variety with long compact ears mentioned by Seringe ; the ears are often 

 curved. 



Glumes glabrous, white ; grain white ; ear quadrate, lax ; awns long. 



T. polonicum, var. levissimum, Korn. Handb. d. Getr. i. 100 (1885). 



T. levissimum, Haller. Hist. Stirp. indig. Helvetiae, ii. 209, No. 1423 (1768). 



Deina polonica alba, Alef. Landzv. Fl. p. 336 (1866). 



This and its pubescent counterpart var. villosum are two of the most widely 

 distributed varieties of Polish wheat. 



Young plants, erect ; young leaves glabrous. 



Straw, tall, 110-120 cm. (about 44-48 inches) high, erect, solid, striated; 

 leaves 15-20 cm. long, 1-5-2 cm. wide. 



Ear, 12-5-17-5 cm. (5-7 inches) long, very lax, slightly tapered at the apex ; 

 spikelets 14-18, 2- to 3-seeded, 2-5-3-5 cm. long. 



Empty glume, 25-30 mm. long, 3 mm. wide, with 5-6 prominent nerves on 

 the outer half ; keel ciliated, the hairs very fine ; apex with two teeth. 



Flowering glume, as long as the empty glume, with fine brittle awns half as 

 long as the ear. 



Grain, 1-25 cm. long or longer, somewhat pointed, flinty, the surface 

 wrinkled. 



Glumes glabrous, white ; grain red ; ear quadrate, lax ; awns long. 



T. polonicum, var. chrysospermum, Korn. Handb. d. Getr. i. 101 



(1885). 



Kornicke's type has white smooth ears 11-5 cm. long ; the empty glumes 

 2-5-3 cm. long ; awns of moderate length, and red grain 9 mm. long. He 

 states that at first the glumes were slightly pubescent, but in later seasons became 

 glabrous. 



Glumes white, glabrous ; ear dense, flattened, broad at base ; spikelets narrow ; 



awns long, white. 



T. polonicum, var. abessinicum, Korn. Handb. d. Getr. i. 103 (1885). 



