100 Annals of the Carnegie Museum. 



* H. glabra (Miller). Pig-nut. 

 C. porcina Nuttall. 



* H. minima (Marshall). Bitter-nut. 

 C. atnara Nuttall. 



BETULACEiE Agardh. 



BIRCH FAMILY. IV-6. 



BETULA Linnaeus. 



* B, lenta Linnaeus. Sweet birch. 



t B. lutea Michaux f. Yellow birch. 



ALNUS Grertner. 



* A. rugosa (DuRoi). Smooth alder. 

 A. serrulata Willdenow. 



CORYLUS Linn^us. 



* C. Americana Walker. Hazel-nut. 



OSTRYA Scopoli. 



* 0. Virginiana (Miller). Hop-tree. 



CARPINUS Linnffius. 

 "■^ C. Caroliniana Walter. American iron-wood. 



FAGACEiE Drude. 



BEECH FAMILY. IV-7. 



QUERCUS Linnreus. 



* Q. alba Linnaeus. White oak. 



■\ Q. minor (Marshall). Post oak. 

 Q. st el lata Wangenheim. 



