[Vol. 12 

 268 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



moniliform inflations, and of (2) a hymenial layer of erect hyphae 

 densely arranged, and of numerous cystidia in all regions of this 

 layer; no gloeocystidia; cystidia incrusted or not incrusted, 15-24 

 X 3-33/^ [L, protruding up to 18 [l beyond the basidia; spores 

 colorless, even, 3 X 2-23/^ [i, fiat on one side, copious. 



Fructifications 3-4 cm. long, 1-1 H cm. wide. 



On very rotten wood. Jamaica. December. Probably rare. 



P. inflata is so loosely attached to the substratum that careful 

 handling is necessary to prevent fructifications from becoming 

 detached from the wood during examination. The pair of monil- 

 iform inflations on short lateral branches of hyphae of the 

 hyphal layer shows distinctly in sectional preparation and 

 promises to be as helpful a character in the recognition of this 

 species as the details of hyphal structure in Stereum purpureum, 

 Cortidum investiens, Grandinia granulosa, and others. 



Specimens examined : 

 Jamaica: Hope Gardens, W. A. Murrill, 4, type, comm. by N. Y. 



Bot. Gard. Herb. 



48. P. Sheari Burt, n. sp. 



Type: in Burt Herb. 



Fructification effused, rather thick, membranaceous, drying 

 pinkish buff, somewhat tubercular, somewhat velvety, not waxy, 

 the margin becoming somewhat free and curling up in drying, 

 separable from the substratum when moistened; in section 800- 

 1000 [X thick, not colored, 2-layered, the layer next to the sub- 

 stratum up to 800-900 [L broad and composed of densely inter- 

 w^oven, hyaline hyphae not incrusted, not nodose-septate, thick- 

 walled, 3 [JL in diameter, the hymenial layer 100-150 [i broad, 

 containing throughout great numbers of slender, rough-walled or 

 minutely incrusted cystidia 30-45 X 4-6 [x; no gloeocystidia; 

 basidia with 4 sterigmata; spores hyaline, even, 10-12 X 6-7 [i. 



Fructifications 3 mm.-2 cm. in diameter. 



On dead Alnus. Blue Mt., Oregon. August. Probably rare 

 and local. 



The fructifications apparently originate as outgrowths from 

 lenticels in the bark and spread laterally over more or less circular 

 areas and become confluent. The occurrence on Alnus, tuber- 



