CLAVIS AGARICIN0RU4I. 221 



coriaceous, tough, hard, and dry; stem hard and often obsolete, when 

 present continuous and the same with the hyraeuophorum ; gills tough, 

 simple, unequal, thin, edge acute, generally toothed ; trama uone. — 

 Hab. On stumps, rarely on the ground. 



A natui-al but very polymorphic genus, distinguished from Pleurotus 

 by its tough and fleshy substance. 



Genus XV. Panus, Fr. Epicr. p. 396.— Spores white; pileus un- 

 equal-sided or lateral, tough, fleshy, at length coriaceous, but not 

 woody, drying up, but reviving with moisture ; stem the same with 

 the hymenophoium ; gills thinner than in the last genus, tough, at 

 length coriaceous, unequal, with an entire acute edge ; trama floccose. 

 — Hab. On stumps. 



All the species are tough (at first softer), never woody ; drying up in 

 decay. 



Genus XVI. Xerotus, Fr. El. p. 48.— Spores white; pileus mem- 

 branaceous ; stem confluent with the hymenophomm, which descends 

 into and forms a trama ; gills dichotomous, foldlike, coriaceous, adnato- 

 decurrent, with an obtuse entire edge ; in the single British species 

 branched and very distant.— Hab. The British plant grows in peat- 

 mosses. 



This genus, which is chiefly tropical, resembles a coriaceo-membra- 

 naceous Cantharellus, with narrow gills. 



Genus XVII. Trogia, Fr. Gen. Hymen.— Spores white ; pileus sub- 

 membranaceous, soft, tenacious, flaccid, but vei-y dry, flexible, reviving 

 with moisture ; gills venose, fold-like, forked, edge channelled longi- 

 tudinally or crisped; texture fibrous.— Hab. On wood, chiefly from 

 the East Indies. 



In the only British species {Catdharellus crispus of the ' Epicrisis ') 

 the edge of the gills is obtuse (not channelled), but it has the habit, 

 form, and texture of Tragia, and is referred to this genus without 

 doubt, by Fries. 



Genus XVIII. Schizophyllum, Fr. Observ. Mycol. vol. i. p. 103. 



Spores white ; pileus not fleshy, dry, sessile ; gills coriaceous, branched, 

 split longitudinally at the edge, with the two divisions revolute or 

 spreading, joined to the pileus by a tomentose pellicle.— Hab. Eotten 

 wood. 



An easily recognized but very aberrant genus of the Jgaricini. 



Genus XIX. Lenzites, Fr. Gen. Hymen.— Spores white ; pileus 



