[Vor. 5 
348 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
of about equal breadth and equal to the loosely interwoven 
layers; hyphae about 2 џ in diameter, concolorous with the 
fructification; setae 50-606 и, emerging up to 50 y, tapering 
from base to a sharp 
point, colored like 
the fructification ; 
paraphyses colored 
like other organs, 
filiform, divided at 
the apex into about 
three short, finger- 
like branches or 
prongs; basidia and 
spores not found. 
Fruetifieation 13X5 cm., broken off along three sides— 
probably large. 
Fig. 18 
H. digitata. 
Section, a, X44; paraphyses, p, X500. From type. 
On bark of rotten logs in forests. Panama. March. 
H. digitata belongs in the group of species with stratose 
fructifications, of which H. spreta is the best known. H. digi- 
tata should be easily recognized by its bright ferruginous 
brown color, fructification composed of very many and very 
narrow strata, and paraphyses with digitately, or sometimes 
pinnately, branched tips. Setae occur not only in the hymenial 
surface but also rather sparingly in the other setigerous layers 
throughout the fructification. 
Specimens examined: 
Panama: El Boquete, Chiriqui, W. В. Macon, 5559, type, 
Smithsonian Survey of Panama Canal Zone (in N. Y. Bot. 
Gard. Herb., and in Mo. Bot. Gard. Herb., 55469). 
23. Н. spreta Peck, N. Y. State Mus. Rept. 30 : 47. 1879; 
басс. Syll. Fung. 6: 595. 1888. 
Hymenochaete laevigata Massee, Linn. Soc. Bot. Jour. 27: 
107. 1890. 
Type: in N. Y. State Mus. Herb. 
Fruetifieations resupinate, long and widely effused, adnate, 
rimose, drying Argus-brown to snuff-brown, the margin thin- 
ning out, velvety when young; in structure 300—500 y thick, 
