120 NEW YORK STATE MUSEUM 



Acer rubrum (red maple) 

 ^'4 A yellowish to deep brown erineum in large patches on under 

 side of leaf. Trichomes capitate. 



Garman '92, no. 12 Mass. 



Specimens from Sand Lake, in the State Herbarium, labeled 



Erineum 1 u t e o 1 u m , and others from the Catskill mountains 



(Prof. C. H. Peck). N.Y. 



Specimens from Lyons pond near Nassau. N.Y. 



5 Erineum acerinum Link no. 10, '' frequens in A. 

 r u b r o . " 



Schweinitz 34, no. 2797 N.C. 



This is placed in the section Phyllerium, which has simple 

 trichomes, and so will not agree with either the preceding or follow- 

 ing. Persoon, however, describes his E. acerinum (no. 15) 

 under the section Grumaria, having enlarged or deformed trichomes, 

 and as occurring on the under side of the leaves (of four European 

 maples), thus agreeing in character and position with the pre- 

 ceding (no. 4). 



*6 A whitish or brown erineum in elongated patches on the veins, 

 on upper side of leaf. Trichomes capitate. 



Garman '92, no. 11 • N.H. 



Specimens from Sand Lake (Professor Peck) in the State Her- 

 barium, labeled Erineum acerinum. N.Y. 



This will hardly agree with Persoon's description of E . acer- 

 inum; see the preceding, and Persoon '22: no. 15. 



*7 A whitish frostlike erineum, with small spots of rosy pink, 

 spreading broadly along the 3 or 5 main veins, on the upper surface 

 of the leaf, sometimes nearly covering it. Trichomes capitate. 

 (This may be merely a variation of the preceding, our specimens of 

 which sometimes showed pinkish brown spots.) Specimens from 

 Altamont in State Herbarium (Professor Peck), labeled Erineum 

 acerinum ? N.Y. 



A similar gall was observed at an elevation of nearly 2000 feet 

 on Blackhead mountain in the Catskills, last of June, on Acer 

 sp. ( ?) ; the specimens unfortunately lost. 



Jarvis's figure i, plate B, looks like a sparsely developed example 

 of this ; it is hardly an A . s a c c h a r u m leaf. 



*8 A pocket-gall, similar to that ofEriophyes quadripes 

 and probably the same; see no. 10 for description. 



Garman '92, no. 13 Ky., New Eng., Eastern States 

 Hagen '85, nos. 21, 22, 23(?) D.C., N.H., Mass. 



