126 NEW YORK STATE MUSEUM 
25 Small reddish or whitish flat woolen patches (erineum) on 
the upper side of the leaves. 
Ela “OE, TO, FO CLrimetinn aAalmig er tl ma) N.H. 
Differs from the preceding in position, but may be the same. 
Persoon ’22, no. 11 describes an E. alni-incani under the 
section Phyllerium that may be one of these forms. 
*26 A small red pubescent pocket-gall on leaf. 
Jarvis ’07, p.60, third sp. Ont. 
Specimens from Shushan (F. Dobbin) and Remsen? (I. L. 
Nixon), at first green or yellowish; coupe from Lyons pond, 
Nassau, Rensselaer co. INEN@ 
This may be compared with the galls of Eriophyes laevis 
(Nalepa) on Alnus glutinosa; see Connold i1go1, British 
Vegetable Galls, p.140, pl. 54. 
Alnus rugosa (serrulata) (smooth alder) 
*27 Small remote pocket-galls on the upper side of the leaf. 
(Perhaps same as preceding). 
Hagen ’85, no. 31 Western States 
A form agreeing fairly with this description, but more crowded 
and projecting on both sides of leaf, was collected between Albany 
and Schenectady. ; INAYE 
Hagen’s no. 32, “a hypertrophy of the female aments by a 
fungus,” from the west, included in his list because Baron Osten- 
Sacken thought it acarideous, is I believe now fully recognized as 
a fungus-gall. This remarkable deformation has been collected on 
Alnus incana at Lyons pond, Nassau, Rensselaer county, 
N.Y. No mites were found in or on the gall. 
Amelanchier canadensis (service-berry) 
28 A dimple (?) similar to a Phrygian cap, with the tip rolled 
down, on the upper side of the leaf, rarely below. Older stage (?) 
larger, yellowish, tip open and woolly. 
Jclagen 85, MO, 93 amc 7 mo, Qa Mass. 
Amelanchier rotundifolia ! (round leaved Juneberry) 
29 Small, nearly globular, dark brown pocket-galls, averaging 2 
mm in diameter, singly or in clusters on the upper side of the lease 
beneath pubescent and protuberant. — 
Jarvis ’08, p.92, second sp., pl.D, fig. 1 Ont. 
1 Jarvis erroneously refers this to. Amelanchier canadensis in his 
explanation of the plate. 
