152 ■ NEW YORK STATE MUSEUM 



ADDENDA 



Trotter's paper in Marcellia 2:63 (' Descrizionc di varie gallc 

 deir America del Nord ") having come to hand after the above 

 hst was largely in type, his additional forms are here appended, 

 references to the others having been incorporated in the text. 

 [Sec nos. 65 and 81] 



Acer leucoderme f white-bark maple) 



163 An erineum in scattered patches mostly on the under sur- 

 face of -the leaf and slightly dimpled, with a corresponding faint 

 discoloration above. Trichomes same as those of E . p u r - 

 p u r a s c e n s (i. e. capitate). 



Trotter '03, p.64, no. 2 Ga. 



This seems to be of the same general type as our no. 14. 



164 Slender pouch-galls on the upper side of the leaf. 



Trotter '03, p.63, no. i, fig. i Ga. 



Probably referable to the work of E r i o p h y e s a c e r i c o 1 a ; 

 see our no. 17. 



Fagus americana (ferruginea) (American beech) 

 164^/2 A sparse, somewhat dimpled erineum, of a rosy or 

 vinosc color, on the under side of the leaf, with a corresponding 

 discoloration above. Trichomes unusually large, strongly 

 capitate. 



Trotter '03, p.66, no. 13, fig. 9 

 Referred doubtfully to our no. 65, but presents some striking 

 dififerences. 



Hicoria pecan (pecan) 

 C a r }• a o 1 i \- a e f o r m i s 



165 A narrow inrolling of the leaf-edges, especially toward 

 the base; within Avith ridges, and tufts of hair. 



Trotter '03, p.65, no 6, fig. 5 Ky. 



Liquidambar styracifiua (sweet-gum) 



166 A tawny or l)rown erineum on the under side of the leaf 

 close to the petiole, in the angles between the \eins. Trichomes 

 simple, cylindric, acuminate. 



Trotter '03, p.66, no. 14 N.C. 



Quercus palustris (swamp oak) 



167 An erineum, mostly on the under side of the leaf, in the 

 angles of the veins and also spreading along them. Color ashen. 

 Trichomes simple, numerous, cylindrical, grouped in tufts. 



Trotter '03, p. 71, no. 35, fig. 13, 13a Tenn, 



