CLASSIFICATION 197 



0. postii (PI. XI, fig. 10). — Cap thin, deeply umbilicate, smooth, 

 edge striate, orange, about i in. across ; gills deeply decurrent, 

 narrow, rather distant, whitish ; stem even, smooth, yellow, hollow, 

 straight, 2-3 in. long. 



The bright orange- colour of the smooth cap distinguishes this 

 from every other species. 



In swamps. 



var. aurea. — Cap infundibuliform, l^right golden 3/ellow ; gills 

 slightly decurrent, white ; stem coloured like the cap. 



On Sphagnum in swamps. 



0. pyxidata. — Cap thin, umbilicate, then infundibuliform, almost 

 smooth, striate, brick-red, or with a rufescent tinge when wet, 

 hygrophanous, whitish and minutely silky when dry, l-i in. across ; 

 gills decurrent, rather distant, narrow, flesh-colour, then yellowish ; 

 stem even, tough, rufescent, soon hollow, about i in. long. 



Among short grass, etc. 



0. leitcophylla. — Cap thin, infundibuliform, almost smooth, 

 not at all floccose, edge involute, dark grey, 1-2 in. across ; gills 

 decurrent, rather distant, shining white ; stem equal, smooth, 

 grey, stuffed, then hollow, i|-2 in. long. 



Distinguished from every other species by the persistently white, 

 shining gills. 



Damp places in woods, etc. 



0. Iwffii. — Cap convex, then wavy, depressed, old ivory-colour, 

 even, smooth, about i in. across ; gills crowded, decurrent, pale 

 wood-colour ; stem about i in. long, often crooked, solid, polished, 

 colour of gills. 



Smell spicy, like CUtocyhe fragrans, from which it differs in the 

 short, polished stem. 



On the ground. 



0. stricBpileus. — Cap thin, convex, then expanded, umbilicate, 

 smooth, everywhere striate, livid brown, hygrophanous, |-ij in. 

 across ; gills slightly decurrent, not crowded, whitish ; stem 

 smooth, tough, tinged with brown, hollow, about 2 in. long. 



Distinguished by the cap being entirely striate from the disc to the 

 edge. 



Among grass in woods, etc. 



0. telmaiicea (PI. XI, fig. 11). — Cap thin, pliant, depressed and 

 soon infundibuhform, edge broadly arched and drooping, dark 

 umber-brown, hygrophanous, pale buff and silky when dry, 1-3 in. 

 across ; gills decurrent, rather crowded, thin, pallid ; stem polished, 

 grey, equal, white and cottony at the base, 1-2 in. long. 



Readily known by the dark umber cap when moist, and the 

 bluish grey stem. The cap is often more or less elegantly waved at 

 the drooping edge. The stem is attached to the moss on which it 

 grows by white, cottony mycehum. 



