INDEX. 



PAGES 



Abele. (Populus alba, L.) 39, 40 



Abies balsamea, Mill. Fir balsam , 20-22 



Abietaceae. (Pinoideae) 1-22 



Larix . 1-4 



Binus 4-12 



Picea 12-18 



Tsuga 19,20 



Abies . 20-22 



Acacia, (Robinia Pseudacacia, L.) 131,132 



(Robinia viscosa, Vent.) 132 



Three-thorned. (Gleditsia triacanthos, L.) . . . . 129, 130 



Aceraceae. (Maple family) 140-153 



Acer barbatum, Michx. Rock, Sugar, Hard maple, Sugar tree 144-146 



barbatum, var. nigrum, Sarg. Black maple .... 146, 147 



dasycarpum, Ehrh. Silver, Soft, White, River maple . 142-144 



Negundo, L. . . Box elder, Ash-leaved maple . . 151-153 



nigrura, Michx. . Black maple 146, 147 



(Striped maple, Moosewood,) 1/in 1K1 



Pennsylvanicum, L. { [ . . 149-151 



( Whistlewood ) 



platanoides . . . Norway maple 146 



rubrum, L. . . Red, Swamp, Soft, White maple . 140-142 



saccharinum, L. . Silver, Soft, White, River maple . 142-144 



( Rock, Sugar, Hard maple, ) 



saccharinum, Wang. \ ' [ . . 144-146 



( Sugar tree ) 



saccharinum, var. nigrum, T. and G. Black maple. . 146,147 



, T (Rock, Sugar, Hard maple,) 1/M A( > 



Saccharum, Marsh. } - 144-146 



( Sugar tree ) 



Saccharum, Marsh., var. barbatum, Trelease .... 172 

 Saccharum, Marsh., var. nigrum, Britton. Black mapZe,146,147.172 



spicatum, Lam. . . Mountain maple 148, 149 



Negundo aceroides, Moench. Box elder, Ash-leaved maple . 151-153 



Negundo, Karst. " " . 151-153 



Ailanthus family. (Simarubaceae) 133 



Ailanthus, Tree of Heaven, Chinese sumac ( Ail ^thus glan- j 13g 



( dulosus r Desf. ) 



Alder, European. (Alnus glutinosa, Medic.) 70 



Alnus glutinosa, Medic. European alder ,,,,... 70 



179 



