SCHIZOPHYLLUM— TROGIA. 303 



cottony, and pure white or greyish, marked by a few indis- 

 tinct zones. Beneath, the lamellae are radiating, subparallel, 

 hairy, coriaceons, and of a reddish -brown or brown-grey 

 colour. Lamellae double ; that is, composed of two rather 

 remote plates, united at the back, and with their sides 

 involute, so that in a dry state they appear tubular when 

 transversely divided. They are arranged in distinct fasci- 

 culi ; each double lamella soon after its origin divides into 

 branches, each of which becomes again subdivided in a fan- 

 like mode; but all these divisions are within the original 

 lamella. Hymenium in the exterior surface of the lamellae. 

 (Grev.) 



TEOGIA. Fries, (fig. 19, p. 301.) 



Pileus sessile, attached laterally, soft, flaccid, dry, per- 

 sistent, texture fibrillose ; gills fold-like, margin longitudi- 

 nally channelled; spores colourless. 



Trogia, Fries, Epicr., p. 402 ; Cke., Hdbk., p. 369. 



Most closely allied to the genus Xerotus, the latter differ- 

 ing in having the thick, obtuse margin of the gills quite 

 entire ; but, as a matter of fact, the only British species of 

 Trogia has the gills obtuse, and in this feature departs from 

 the generic type, although agreeing in every other essential. 



Trogia crispa. Fr. (fig. 19, p. 301.) 



Pileus |~1 in. across, tough, when young cup-shaped, then 

 reflexed, lobed and irregular, slightly downy, yellowish- 

 brown behind, margin becoming whitish; gills vein-like, 

 thick, narrow, edge obtuse, crisped, but not canaliculate, 

 greyish- white ; spores subglobose, 5-6 fi. 



Trogia crispa, Fries, Epicr., p. 369 ; Cke., Hdbk., p. 359 ; 

 Cke., lUustr., pi. 114a. 



On branches, &c. 



Eesembling a Peziza when young, then irregularly ex- 

 panded and becoming almost flat, often gregarious. Some- 

 what the texture and appearance of a small Mei-ulius, but 

 distinguished by the colourless spores. Joined by old authors 

 with Gantharellus, some of the smaller species of which bear 

 some resemblance to Trogia, but the latter differs in not 

 disappearing at maturity, but persistent, and reviving with 



