1918] 



BURT THELEPHORACEAE OF NORTH AMERICA. X 



313 



Fig. 3 



H. Berkeleyana. 



Section X 44. See pi. 16, f. 5. 



5. H. Berkeleyana (Montagne) Cooke, Grevillea 8 : 147. 

 1880; Sacc. Syll. Fung. 6 : 596. 1888. 



Stereum Berkeleyanum Montagne, Ann. Sci. Nat. Bot. IV. 

 1 : 140. 1854; Syll. Crypt. 178. 1856. 



Type ; authentic specimen in Kew Herb. — probably portion 

 of type. 



Fructifications effuso-reflexed, cespitose-imbricated, often 

 dimidiate, radiately rugose, sericeous, with the hairs radially 

 decumbent, bay, becoming somewhat zonate with interrupted 

 blackish zones, radially plicate, 

 the margin lobed, sometimes 

 proliferous, yellow ocher; hy- 

 menium not rimose, antique 

 brown; in structure 500-600 n 

 thick, with the hyphal layer not 

 bordered on either side by a 

 dark, dense zone, and com- 

 posed of closely and longitu- 

 dinally arranged, colored, very 

 thick-walled hyphae 3^-4 n in diameter and up to 5 /x on the 

 upper surface of the pileus; setae scattered, not crowded, 

 90-120x12-15 fji, emerging 60-75 /x, tapering from the base 

 upward to a slender point; spores hyaline, even, 6x3| m- 



Fructifications with reflexed part 1 cm. broad, 1 cm. long, 

 laterally confluent into clusters up to 3 cm. broad. 



On bark and rotten wood. Jamaica and Guiana. December 

 and January. Rare. 



The general aspect of H. Berkeleyana is suggestive of that 

 of H. hadio-ferruginea but the former has its pilei more 

 crowded together than the latter and radially plicate. The 

 absence of any dark zones bordering the intermediate layer 

 of H. Berkeleyana sharply separates this species from the 

 H. tabacina group when sections are examined, and places the 

 species in the group with H. attemuita and H. Sallei, from 

 both of which it is distinct by its plicate, more crowded pilei, 

 covering of the pilei, and larger setae. I had not received 

 the collections from Jamaica, cited below, when I studied the 

 authentic specimen from Montagne at Kew, but these later 



