673 



0. virginica, Willd. North America. " Ironwood." 



0. virginiana, C. Koch ; Sargent Silva of North 



America t. 445. 

 Carpinus triflora, Moench. 

 C. virginiana, Mill. 



Corylus americana, Walt.; Dippel Laubholzk. ii. 131,1^62. 



Eastern North America. 

 C. calyculata, Dippel 

 C. cornuta, Hort. 

 C. humilis, Willd. 

 C. mexicana, Hort. 

 C. rostrata, Hort. in part (not Ait.). 

 C. virginiana, Hort. 

 C. virginica, Hort. 



C. Avellana, L. ; Engl. Bot. ed. 3, t/4292. Europe West 

 Asia, &c. " Common Hazel." 



C. calif ornica, Hort. 

 Var. aurea. 

 Var. contorta, Hort. ; Gard. Chron. 1874, i. 115, f. 32. 



Var. heterophylla, Loud. 

 C. heterophylla, Lodd. 

 C. laciniata, Hort. 

 C. urticaefolia, Hort. \ 



Var. pendula. 



Var. prolifica, Hort. 



C. Colurna, L. ; Wats. Dendr. Brit. t. 99. South-east Europe 

 to Himalaya. " Constantinople Hazel." 



C. arborea, Hort. 



C. arboresceiis, 3Iofnc7i. 



12159 Y 



