Murrill: Polyporaceae of Jamaica 



193 



Tyromyces Palmarum Murrill, N. Am. Flora 9: 32. 1907. 

 Collected at Hope Gardens in 1902 by F. S. Earle. 



Tribe FOMITEAE 

 Amauroderma Brittonii sp. nov. 



Sporophores of immense size, two growing side by side and 

 slightly united in the type collection; pileus circular in outline, 

 nearly plane, rather soft when fresh, becoming rigid and fragile 

 when dry, over 30 cm. broad in a dried condition and prob- 

 ably 50 cm. when fresh; surface uneven, somewhat sulcate, cas- 

 taneous to fuliginous, pelliculose, pruinose, opaque, becoming 

 very much wrinkled and uneven on drying : context punky when 

 dry, avellaneous, homogeneous, bounded above and below by a 

 thin, dark layer about 2 mm. thick ; hymenium grayish when 

 fresh, becoming brownish on drying and blackening where 

 bruised; tubes minute, irregular, very short, less than 5 mm., 

 much darker than the context, being dark-fumose in dried speci- 

 mens, mouths slightly angular, 2-3 to a mm., stuffed when young, 

 edges thin, entire, rigid : spores subglobose, slightly fuscous, finely 

 asperulate, ySjn: stipe subcylindric, short, central, slightly en- 

 larged above and below, harder and more rigid than the pileus, 

 encrusted, avellaneous, pruinose, glabrous, uneven, 10 cm. long, 

 6 cm. thick, no doubt larger in fresh specimens. 



Type collected at Bachelor's Hall, Parish of St. Thomas, 

 Jamaica, on a rotten log, September 15-19, 1908, A^. L. Britton 

 3^30. 



Amauroderma renatum (Berk.) Murrill, N. Am. Flora 9: 117. 



1908. Collected between Chapelton and Bull Head in 1906 by 



L. M. Underwood. 

 Elfvingia fasciata (Sw.) Murrill, Bull. Torrey Club 30: 298. 



1903. 



Cockpit Country, 846. 

 Elfvingia tornata (Pers.) Murrill, Bull. Torrey Club 30: 301. 

 1903. Abundant throughout the island. Common on fallen 

 pine logs at Cinchona. 



Cinchona, 404, 442, 611 ; Cockpit Country, 880; Moneague to 

 Union Hill, 11 56. 



Fomes annosus (Fries) Cooke, Grevillea 14: 20. 1885. Seen 

 only in the mountains. 



Chester Vale, 505^^; Cinchona, 411, 42^/, 555. 



