S04 BRITISH FUNGI 



with wavy veins, becoming cavernous, deliquescent ; asci cylin- 

 drical, 8-spored ; spores globose, smooth, colourless. 



S. bomhycina. — Ascophore subglobose, depressed, often very 

 irregular, indented at the base, rather soft, minutely downy, 

 whitish or with a yellow tinge, 1-3 in. across ; gleba whitish with 

 yellow septa or walls ; asci cyhndrical, 8-spored ; spores smooth, 

 globose, colourless, 18-23 I'- diam. 



Smell pleasant at first, becoming very disagreeable and strong 

 when old. 



Underground under trees. 



Pachyphlceus 



Ascophore fleshy, often warted, with a more or less well-dehned 

 apical opening, base distinct ; gleba with wavy dissepiments ; 

 asci ovate-oblong, 8-spored ; spores globose, coloured, warted. 



P. melanoxanthus. — Ascophore subglobose, warted, with a dis- 

 tinct base, yellowish green, then blackish, opening apical or lateral, 

 l~2 in. diam. ; gleba olive-yellow, then dusky and with broad, 

 black lines ; asci 8-spored ; spores coloured, globose, warted, 

 14-17 /x diam. 



Smell weak when young, becoming strong and nauseous. 



Among humus in oak and beech woods, sometimes attached to 

 twigs and dead leaves lying above ground. 



P. citrinus. — Ascophore subglobose, minutely warted, brown and 

 powdered with yellow granules, apical opening bright yellow, base 

 rooting, up to i in. broad ; gleba lemon-yellow ; asci narrowly 

 ovate-oblong, 8-spored ; spores glol^ose, coloured, minutely warted, 

 13-14 ji diam. 



Differs from P. melanoxanthus in the thinner and mucli more 

 finely warted wall of the ascophore, which is clear yellow when 

 young ; also in the more finely warted spores. 



Smell strong, said to resemble decaying seaweed. 



Underground in woods. 



P. conglomeratus. — Ascophore irregularly nodulose and plicate, 

 as if consisting of several distinct individuals joined together ; 

 lobes rounded, smooth, deep rufous brown or oHve-brown, the 

 sunken portions with yellow fibres, up to li in. diam. ; asci broadly 

 oblong-ovate, 8-spored ; sjiores globose, coloured, with scattered 

 warts, i6-ig /i diam. 



Distinguished by the mucli-lobed ascojiliore, \\hich has a short 

 stem-like base. 



Underground in woods. 



Tuber 



Ascophore irregularly glob.ose, without a distinct rooting l;ase, 

 fleshy or sometimes becoming almost woody, surface smooth, 

 downy or warted ; gleba presenting a marbled appearance, due to 



