[VOL. 5 

 340 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



The absence of an intermediate layer is likely to place the 

 usual collections of resupinate H. corticolor in the group of 

 species with H. corrugata, H. cervina, H. Pellicula, H. tenuis, 

 etc., from all of which H. corticolor is distinguishable at sight 

 by its great thickness, drab hymenium, black upper surface of 

 reflexed edge, and occurrence on the bark of living tree trunks. 

 This species attains its best development in South Carolina 

 and Florida. The black upper surface of the reflexed edge 

 is a good character for separation from H. unicolor. 



Specimens examined: 

 Exsiccati: Ellis, N. Am. Fungi, 408; Ravenel, Fungi Car. 3 : 



30; Fungi Am., 121. 

 New Jersey: Newfield, J. B, Ellis, in Ellis, N. Am. Fungi, 



408. 

 Maryland: Takoma Park, C, L. Shear, 1003, 1096. 

 South Carolina: H. W. Ravenel, Curtis Herb., 1553 (in Kew 



Herb.), and in Ravenel, Fungi Car. 3 : 30, type distribution. 

 Florida: Cocoanut Grove, R. Thaxter, 79 (in Farlow Herb., 



and in Mo. Bot. Gard. Herb., 43984) ; Daytona, R. Thaxter, 



13 (in Farlow Herb., and in Mo. Bot. Gard. Herb., 43933) ; 



Gainesville, N, L. T. Nelson (in Lloyd Herb., and in Mo. 



Bot. Gard. Herb., 55455), and H, W, Ravenel, in Ravenel, 



Fungi Am., 121. 

 Cuba: San Diego de los Banos, Earle <& Murrill, 198, comm. 



by N. Y. Bot. Gard. Herb. 

 Jamaica: Cinchona, W, A, d Edna L. Murrill, 419, comm. by 



N. Y. Bot. Gard. Herb. 

 Grenada : Grand Etang, R. Thaxter, comm. by W. G. Farlow, 



13. 



18. H. arida Karsten in Sacc. Syll. Fung. 9 : 228. 1891 ; 

 Bresadola, Ann. Myc. 1 : 93. 1903. 



Hymenochaetella arida Karsten, Finska Vet.-Soc. Bidrag 

 Natur och Folk 48 : 428. 1889. fl^. laxa Karsten, Finska Vet.- 

 Soc. Bidrag Natur och Folk 48 : 429. 1889. Hymenochaete 

 laxa Karsten in Sacc. Syll. Fung. 9 : 228. 1891. Corticium 

 simulans Berk. & Rav. in Cooke, Grevillea 6 : 132. 1878 (with- 

 out description but with reference to Ravenel, Fungi Am., 

 10) ; Ravenel, Fungi Car. 5 : 25 (without description) ; de 



