CLASSIFICATION 137 



M. polygramma (PI. XI, fig. 5). — Cap thin, elastic, dark grey 

 with a brown tinge, coarsely striate, i-ij in. across ; gills pale 

 grey ; stem 3-4 in. long, tough, shining, distinctly striate through- 

 out its length, pale grey. 



Recognized by the distinctly striate stem. 



On stumps and trunks. 



M. parabolica. — Campanulate, edge spreading, disc blackish 

 with a violet tinge, becoming paler towards the edge, striate, i-i| 

 in. across ; gills connected by veins, white, base greyish ; stem 

 blackish violet above, base coarsely fibrous. 



Differs from M. galericulata in gills not becoming pink. 



On rotten trunks, especially pine. 



M. tintinnahuhim. — Cap tough, becoming almost flat, quite even, 

 viscid when moist, bay or yellowish brown, about i in. across ; 

 gills becoming tinged pink ; stem smooth, even, pallid. Remark- 

 able in the genus for the perfectly smooth, even cap. 



On fallen trunks. 



COLLYBIA 



Cap symmetrical, edge incurved when young ; gills free or 

 adnexed, soft ; stem central, with a cartilaginous cortex. 



Nearest to Marasmius, which differs in the dry, tough substance 

 and in fully expanding when moistened after being dried. Clitocyhe 

 and Tricholoma differ in the fibrous texture of the stem at the 

 surface. In Mycena the edge of the cap is straight and not in- 

 curved when young. 



I. Gills white or clear in colotir, never grey ; flesh white. 



* Stem stout, grooved or striate. 



f Gills broad, rather distant. 



C. radicata (PI. XII, fig. i). — Cap i|-4 in. across, elastic, gibbous, 

 glutinous, brownish olive, ochraceous brown or sometimes with a 

 greenish tinge, radiately wrinkled ; gills white ; stem 4-7 in. long, 

 ending in a long rooting base, striate, greyish. 



Distinguished by the glutinous, wrinkled cap and the long 

 polished stem, ending in a tapering rooting base often a foot or 

 more in length. 



Among grass, etc. 



C. henriettcs. — Cap thin, dry, even, expanded, somewhat downy, 

 yellowish umber, 3-4 in. across ; gills broad, broadly adnate, 

 slightly rounded behind, distant, white ; stem narrowed upwards, 

 pallid yellowish brown both inside and outside, some\\'hat pruinose, 

 darker downwards, slightly rooting, 6-8 in. long. 



Intermediate between C. radicata and C. longipes. 



On and around stumps, etc. 



C. semitalis. — Cap 1-4 in. across, convex, then plane, sooty or 

 pitch-black, greyish when dry ; gills broad, white, then greyish, 



