RIVET OR CONE WHEAT 247 



Length. Breadth. Thickness. 



The long growing period, number of culm leaves, velvety leaf-surface, 

 the height, surface, and pithy interior of its straw, the density of the ear, 

 as well as the frequent occurrence of compound ears, indicate a close 

 relationship of T. turgidum with the tall European forms of T. dicoccum. 



A few forms suggest affinity with T. durum, while others appear to be 

 allied to T. rulgare ; these are probably hybrids. 



VARIETIES OF T. turgidum. L. 

 I. Ears btarded 



1 . Glumes white, glabrous ; awns white. 



i. Ear simple, grain white . . var. lusitanicum, Korn. 



ii. Kar simple, grain red .... var. gentile, Korn. 

 iii. Ear branched, grain red . . . var. colutnbinum, Kiirn. 



2. Glumes white, glabrous ; awns black. 



i. Ear simple, grain white . . . var. melannthcrum, Korn. 



ii. Ear simple, grain red . . . var. nigrobarbatum, Korn. 



iii. Ear branched, grain red . . . var. fxtt'oninum, Korn. 



3. Glumes white, pubescent ; awns white. 



i. Ear simple, grain white . . . var. mfgafopolitanum, Korn. 



ii. Ear simple, grain red . . . var. buccale, Korn. 



iii. Ear branched, grain red . . . var. centigranum, Korn. 



iv. Ear branched, grain red-violet . . var. modigrnitum. Korn. 



4. Glumes white, pul>escent ; awns black. 



i. Ear simple, grain white . . . var. Stilomom's, Korn. 



5. (flumes red, glabrous ; awns red. 



i. Ear simple, grain white . . var. Drrischitmum, Korn. 



ii. Ear branched, grain white . var. pseudocervinum, Korn. 

 iii. Ear simple, grain red . var. sf>eciosum, Korn. 



iv. Ear branched, grain red . . var. crrrinum, Korn. 



6. Glumes red. glabrous ; awns black. 



i. Ear simple, grain white . . . var. sftfciusissimum, Korn. 

 ii. Ear branched, grain white . . var. 1'linianum, Kdrn. 



iii. Ear simple, grain red .... var. Merlensii. Korn. 



7. Glumes red, pubescent ; awns red. 



i. Ear simple, grain white . . var. pseudumirahilt , nuhi. 



ii. Ear branched, grain white . var. miruhilt , Korn. 



iii. Ear simple, grain red . . var. ilinurum, Kuril, 



iv. har branched, grain red . var. Linnaeanum, Korn. 



