192 



Mycologia 



acute, deflexed, white, entire : context white, firm, fibrous, homo- 

 geneous ; tubes i mm. long, stramineous within and without, 

 mouths regular, 4-5 to a mm., circular to slightly angular, glisten- 

 ing, edges obtuse, entire : spores hyaline ; cystidia none. 



Type collected between Moneague and Union Hill, Jamaica, 

 500 m., on dead wood, January 17, 1909, W. A. & Edna L. 

 Murrill ii2p. 



Trichaptum trichomallum (Berk. & Mont.) Murrill, Bull. 



Torrey Club 31 : 608. 1904. Collected at Mansfield near Bath 



in 1903 by L. M. Underwood. 

 Tyromyces caesius (Schrad.) Murrill, N. Am. Flora 9: 34. 



1907. Abundant about Cinchona on dead branches of Juni- 



periis harhadensis. 



Castleton Gardens, 60; Cinchona, 45^, 41^, 541, 55^, 57^; New 

 Haven Gap, 776*. 



Tyromyces cinchonensis sp. nov. 



Pileus imbricate, flabelliform, attached by a narrow base, con- 

 vex above, concave below, slightly flexible, becoming rigid and 

 fragile when dry, 2.5 X 2.5 X 0.2-0.3 '■> surface milk-white, 

 becoming suffused with avellaneous or very pale ardesiacous 

 markings, perfectly glabrous, radiate-rugose ; margin thin, un- 

 dulate or eroded, deflexed on drying, concolorous : context white, 

 thin, fibrous, rather tough for the genus ; tubes white, much 

 longer than the thickness of the context, averaging about 2 mm., 

 mouths angular, regular, white with an ashy tint, glistening, 5-6 

 to a mm., edges thin, becoming slightly lacerate-dentate : spores 

 cylindric, curved at times, smooth, hyaline, 4 X 1-5-2.5 ^u. 



Type collected at Cinchona, Jamaica, 1670 m., on a coniferous 

 log, December 25-January 8, 1908-9, W. A. & Edna L. Murrill 

 ^00. Also collected at the same time at the base of a dead sapling 

 {No. 509). 



Tyromyces lacteus (Fries) Murrill, N. Am. Flora 9: 36. 1907. 

 These specimens differ somewhat from the usual form found 

 in temperate regions and the spores are broader, measuring 



3.5-4.5 X 1.5-2.5/^. 



Cinchona, 516. 



Tyromyces leucomallus (Berk. & Curt.) Murrill, N. Am. 

 Flora 9: 36. 1907. 

 Cockpit Country, iio8j4. 



