1918] 



BURT TIIELEPHORACEAE OF NORTH AMERICA. IX 185 



tips of two kinds ; most tips are racemose with about 12 lat- 

 eral branches 3 /x long standing out from an axis 6 /x in diam- 

 eter, other tips consist of 2 or 3 monilif orm bodies — either 

 kind of paraphysis may bear a cluster of lateral branches at 

 some region more or less distant from the end; basidia 80- 

 100X12 /x; spores hyaline, even, 18-21x12-13 /x. 



Fructifications 1-2 mm. in diameter, becoming confluent 

 into masses 2x1 cm. 



On bark of dead Ostrya virginica, Quercus alba, Q. macro- 

 carpa, Salix, hickory, etc. Canada to Alabama, westward to 

 Missouri. 



A. Oakesii resembles A. amorphus so closely in aspect that 

 it was regarded by Fries in his ' Hymenomycetes Europaei' 

 as a synonym of the latter species, from which Cooke demon- 

 strated that it was clearly distinct by the paraphyses. It may 

 be separated at sight by the hymenium of A. Oakesii not be- 

 ing convex, by the fructifications becoming very large by con- 

 fluence, and by its occurrence on bark of frondose species. 



Specimens examined: 

 Exsiccati : Ellis, N. Am. Fungi, 935a and b ; Ell. & Ev., Fungi 

 Col., 310 ; Kellerman, Ohio Fungi, 125 ; Rabenhorst, Fungi 

 Eur., 3232; Ravenel, Fungi Car. 3 : 32, type distribution; 

 Shear, N. Y. Fungi, 116. 

 Canada: Ontario, Carleton Place, J. Macoun, 422; London, 



J. Dearness, 2647 (in Mo. Bot. Gard. Herb., 19516). 

 New England: Oakes (in Curtis Herb., 3102). 

 Vermont: Middlebury, E. A. Burt. 

 Rhode Island: Olney (in Curtis Herb., 1827). 

 New York : Alcove, C. L. Shear, in Shear, N. Y. Fungi, 116 ; 

 Altamont, E. A. Burt; definite locality not given, Sartwell 

 (in Curtis Herb., and in Mo. Bot. Gard. Herb., 4830) ; Buf- 

 falo, G. W. Clinton (in U. S. Dept. Agr. Herb.). 

 New Jersey: Laning (in Curtis Herb., and in Mo. Bot. Gard. 



Herb., 44128, 44129). 

 Pennsylvania: Bethlehem, E. A. Rau, in Ellis, N. Am. Fungi, 

 935a; Spruce Creek, J. H. Faull, Univ. of Toronto Herb., 

 366 (in Mo. Bot. Gard. Herb., 44915) ; State College, C. R. 

 Orion, 3 (in Mo. Bot. Gard. Herb., 44080) ; Trexlertown, W. 



