448 BRITISH FUNGI 



T. viscosa. — Small, depressed, wavy, white, then grey. 



Forming grey, flattened, small gelatinous patches ; when dry 

 resembling a thin, closely adpressed skin of a brown colour. 



On dead wood. 



T. epigcea. — Gelatinous, effused and depressed, wavy and con- 

 torted, thin, white, becoming pruinose. 



Forming a small, thin white stratum. 



On naked soil. 



T. indecorata. — Gelatinous, bursting through the bark, or erum- 

 pent, sessile, rounded, moist, opaque, variously folded, ding}^ olive, 

 becoming blackish brown when dry, 3-4 lines across. 



Dirty grey, livid, or olive-brown, pitch-brown when collapsed 

 and dry. 



On willow, poplar, etc. 



T. moriformis. — Sessile, erumpent, roundish or oblong, wav}^ 

 black with a purple tinge, internally deep purple, opaque, firm. 



Small, resembling mulberries in miniature, remarkable for 

 liberating a purple colour, when treated with hydrate of potash. 



On rotten wood. 



T. versicolor. — Gelatinous but firm, orbicular, orange, becoming 

 brown ; minute. 



Forming minute orange, tear-like con\'ex spots ; paler when 

 young, at length becoming rufous. 



On the hymenium of Corticium nudum. 



N^MATELIA 



Subgelatinous but firm, forming convex, convoluted or brain-like 

 cushions with a central, white, opaque portion. 



Readily distinguished when cut in half, verticall}', by the presence 

 of a white, hard nucleus or central mass. When dry, the white 

 central body alone shows, the gelatinous covering being shrunk up 

 to an almost invisible film, but when moistened it expands. 



A'', cncephala. — Forming a firm, pale, flesh-coloured, wart-like 

 mass, |-2 in. across, surface variously contorted, central mass large, 

 white. 



On pine and other wood. 



N. nucleata. — Similar in form to N. encephala, but smaller, white, 

 then tinged yellowish. 



On rotten wood, branches, etc. 



A^. virescens.- — Dingy green, about ^ in. across. 



On furze branches. 



Tremellodon 



Gelatinous, fleshy, attached by the side, under surface or hy- 

 menium covered with numerous pointed gelatinous spines. 



Readily distinguished by its soft gelatinous substance, and by 



