RI'I'OKT or TTIi: STATF, IIOTANIST \()l/ II7 



Poria sulphurella (Peck) Sacc. 



Plate- 22. fiKui-fs 1-5 



Syll. Fung., 9: 190. 1S91 



P o 1 y p r u s > u 1 p li 11 r c 1 1 u s Peck, 4J(\ l\cp't X. V. Stale Mus., ]). i_v, 

 (Bot. ed., p. 27). iSS() 



OrUilnal description. Resupinate, effused, very thin, following the 

 inequalities of the matrix, sul)iculuni and margin downy, white ; 

 pores very short, minute, rotund, \ery pale yellow, often with a 

 slight salmon tint, the dissepiments obtuse. 



Dead bark of poplar, Catskill mountains. Sept. 



Notes. The type material of this species is somewhat scanty, 

 consisting of four small specimens on bark and mounted on a 

 herbarium sheet. The name should not be confused with Dae- 

 dal e a sulphurella Peck, a resupinate species described 

 later in this paper, and thought by Peck to have affinities with the 

 genus Daedalea. In view of the fact that both species are resupi- 

 nate it would have been better had the Daedalea species been given 

 another name. 



The largest piece of bark bearing the type specimens is about 

 9 cm long and 3 cm broad but less than half of its surface is cov- 

 ered by the fungus (plate 22, figure i). The color of the hymenial 

 surface is at present light buff or pinkish buff". At first the fruc- 

 tifications are surrounded by a narrow, very thin, sterile, pubescent 

 border which may in part disappear as the plants mature. The 

 thickness of the mature fruiting portion is only about three-fourths 

 of a millimeter in the thickest parts, and in places is considerably 

 thinner. Of this thickness the larger part is made up of tube 

 lengths,, the subiculum being very thin and nearly invisible. The 

 mouths of the tubes are rounded and even in the most mature speci- 

 mens, and average 5 to 6 to a millimeter. The dissepiments are 

 nearly as thick as the diameter of the tubes, and except in the more 

 mature specimens are very finely pubescent. They are very regu- 

 lar and entire. There is no sheen or silkiness to the hymenium. 



The spores are short cylindric and for the most part curved. 

 They are colorless and 3 to 5 /i, long by i to 2 /* broad (plate 22, 

 figure 5). They are not abundant in the specimens but are not hard 

 to find both free floating and on basidia. There are no cystidia 

 in the hymenium (plate 22, figure 2). The trama is not very com- 

 pact and is composed of hyaline, thin-walled h}phae that are usu- 

 ally quite flexuous and more or less branched (plate 22, figure 4). 



