248 



HYDNEI. 



sistotrema. Genus XXXV.— Sistotrema (sisto, to place; rprjfxa, a pore. From 

 the arrangement of the pores). Pers. — Fr. Syst. Myc. i. p. 426. 



Fleshy, with an inferior hymenium spread over teeth resem- 

 bling broken gills. Gills somewhat waxy, irregularly arranged 



(not radiating), distinct, bent, easily 

 rubbed off from the pileus. Sporo- 

 phores 4-spored, spores oval. Irreg- 

 ular inform or dimidiate. 



A genus nearest to Irpex, but 

 clearly distinct by reason of the gill- 

 like, irregularly arranged, distinct, 

 non-concatenate teeth, and by the 

 fleshy substance. Fr. Hym. Eur. p. 

 618. 



IX-2- 





wMmPw T 



V W wmwfif 



LXXVI. Sistotrema conflaens. 

 Natural size. Section twice 

 natural size. 



1. S. confluens Pers. — Entire, 

 shining white. Pileus 1-2.5 cent - 

 {Yz-\ in.) broad, fleshy, irregular, 

 horizontal, villous. Stem 2.5 cent. 

 (1 in.) and less long, somewhat ex- 

 centric. Gills (tooth - like plates) 

 flexuous, changeable in form. 



Simple, but caespitose and growing into each other. 



On the ground and sticks. Uncommon. Autumn. 



At length yellowish or tinged with brown. Tooth-like plates of the 

 hymenium entire or jagged. Grev. Name — confluo, to flow together. Con- 

 fluent. Pers. Syn. p. 551. Fr. Hym. Eur. p. 619. Syst. Myc. i. p. 426. 

 Berk. Out. p. 262. C. Hbk. n. 869. S. Mycol. Scot. n. 821. Grev. t. 248. 

 — Bull. t. 453./ 1. Sow. t. 112. 



irpex. Genus XXXVI.— Irpex (irfiex, a harrow). Fr. Elench. p. 142. 



Hymenium inferior, toothed from the first. Teeth firm, some- 

 what coriaceous, acute, concrete with the pileus, arranged in 

 rows or like network, connected at the base by folds, which are 

 gill-like (in sessile species) or resemble honeycomb (in resu- 

 pinate ones). Sporophores 4-spored. Growing on wood, some- 

 what sessile or resupinate, approachi?ig Lenzites and Dcedalece. 

 Fr. Hym. Eur. p. 619. 



