1925] 



BURT THE THELEPHORACEAE OF NORTH AMERICA. XIV 307 



tichum left in the swampy woods. Texas. September. Prob- 

 ably local. 



P. Taxodii has thin grayish fructifications on the blackened, 

 weathered wood of a prostrate tree top left in lumbering opera- 

 tions. It is difficult to distinguish cystidia from gloeocystidia in 

 the sections unless the organs lacking contents which take the 

 stain are cystidia and the deep-staining and more numerous 

 bodies gloeocystidia, for both start from the substratum, protrude 

 beyond the hymenium, and taper to a sharp point. 



Specimens examined : 

 Texas : Beaumont, C. J. Humphrey, 5947, type. 



83. P. investiens Burt, n. sp. 



Type: in N. Y. Bot. Gard. Herb., Mo. Bot. Gard. Herb., and 

 Burt Herb. 



Fructifications longitudinally effused, thin, adnate, small 

 pieces separable when moistened, becoming cartridge-buff in the 

 herbarium, even, not cracked, not shining, the margin thinning 

 out, minutely tomentose; in section 180 (j. thick, not colored, with 

 a broad layer of densely interwoven hyphae 23^-3 \l in diameter, 

 thin- walled, not incrusted, not nodose-septate; gloeocystidia 

 flexuous, 25-40 X 4-5 y., immersed in the hymenium; cystidia 

 not incrusted, 9 pi in diameter, protruding up to 60 y. beyond 

 the basidia; basidia with 4 prominent sterigmata; spores hyaline, 

 even, 12-13 X 3-33^2 ^ one spore seen is 15 X 6 y. but per- 

 haps does not belong. 



Fructifications 8 cm. long, 1 cm. wide. 



On decaying stem of palmetto. Bermuda. December. 



The presence of the gloeocystidia in the hymenial layer and 

 not also in the interwoven hyphae near the trama, together with 

 the long spores and occurrence on palmetto, should enable the 

 recognition of P. investiens. 



Specimens examined: 

 Bermuda: Stewardson Brown, N. L. Britton & F. J. Seaver, 1824, 



type (in N. Y. Bot. Gard. Herb., Mo. Bot. Gard. Herb., 



63730, and Burt Herb.). 



84. P. incarnata (Pers.) Karsten, Hedwigia 1889: 27. F. 

 1889; Finska Vet.-Soc. Bidrag Natur och Folk 48: 424. 1889; 



