[Vol. 5 

 356 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



bordered on each side by a narrow, dense, dark zone ; hyphae 

 3-3^ jj, in diameter, colored, thick-walled; setae 40-70x6-7 n, 

 emerging up to 30 /x, tapering from the base, abundant but not 



crowded ; colored para- 

 MMM ^"^^ physes 1-2 n in diameter, 

 'MWf?'^^^^ (M 1 \\ ^^^^^ pinnatifid tips, are con- 

 j^s-^^g^Si^^^^ ^ spicuous in the hymenium; 



Fig. 24 spores hyaline, even, flat- 



H. pinnatifida. tcncd on onc side, 4-5x11 M, 



Section, a, x^f ^^ P/^'-^pbges, p, X 640. ^^^^^ ^ ^^ ^ basidium as scen 



in preparations of sections. 



Fructifications about 1-3 cm. in diameter. 



On bark of fallen frondose limbs. Georgia to Louisiana, in 

 Mexico, Cuba, and Jamaica. August to April. Apparently 

 common. 



H. pinnatifida has some resemblance to resupinate H. rto- 

 biginosa, but the setae of the former are less conspicuous with 

 the aid of a lens; the presence of colored paraphyses with 

 pinnatifid tips distinguishes H. pinnatifida from all other non- 

 stratose species. 



Specimens examined: 

 Exsiccati: Ell. & Ev., N. Am. Fungi, 1713, under the name 

 Hymenochaete insularis; Eavenel, Fungi Am., 122, under the 

 name Hymenochaete ruhiginosa. 



Georgia: Atlanta, E. Bartholomew, 5675 (in Mo. Bot. Gard. 

 Herb., 44260). 



Florida: G. C. Fisher (in Lloyd Herb., 08238) ; W. W. Cal- 

 kins, 82, 93 (in N. Y. Bot. Gard. Herb., and in Mo. Bot. Gard. 

 Herb., 55489, 55490), and in Ell. «& Ev., N. Am. Fungi, 1713; 

 Gainesville, H. W. Ravenel, in Eavenel, Fungi Am., 122; 

 Jacksonville, W. W. Calkins (in N. Y. Bot. Gard. Herb., and 

 in Mo. Bot. Gard. Herb.) ; New Smyrna, C. G. Lloyd, 2139, 

 type, and 2140. 



Alabama: Auburn, F. 8. Fade, 114 (in N. Y. Bot. Gard. Herb., 

 and in Mo. Bot. Gard. Herb., 55492). 



Mississippi: Jackson, E. Bartholomew, 5798 (in Mo. Bot. 

 Gard. Herb., 44268). 



