DECADES OF FUNGI. 333 
the inequalities of the soil. Subiculum thin membranaceous 
formed of delicate byssoid threads which penetrate here and 
there into the earth in little villous tufts in some parts 
loosely interwoven, but in other parts more compact, par- 
tially separable when fresh, but when dry very brittle. 
Border indeterminate without any byssoid fringe. Hyme- 
nium uneven, following the inequalities of the soil irregular 
sprinkled with patches of short flat tooth-like processes 
which form more or less distinct but extremely irregular 
large pores, which in the most highly developed portions 
of the hymenium are of a pale tan-colour. The internal 
tissue of the lamellar processes is remarkably complicated 
forming a net-work from the frequent anastomosing of the 
irregular flocci of which it is formed. The connexion of 
these with the fructifying surface, whose structure in the 
dry plant is very obscure, has not been ascertained satis- 
factorily. 
This is one of those species which it is difficult to refer to 
any genus; the structure of the present, however, appears 
to be exactly that of Sistotrema, though it might with 
nearly equal justice be associated with Pol. radula, aneirina, 
$c. Nothing can be more irregular than the disposition of the 
processes which though forming loose pores are from the 
Very first toothed and irregular. 
15. Hydnum selerodontium, n. s. orbiculare totum effusum 
Tésupinatum; subiculo tenui levi glaberrimo nitido ochraceo; 
aculeis sparsis rotundis attenuatis longissimis flexuosis rigidis 
hic illic divisis rufis. 
Jaya, Spanoghe ; on bark. B uie 
Forming large orbicular patches 3 inches or more in 
ameter, Effused and perfectly resupinate. Subiculum 
thin adnate ochraceous very smooth and shining; margin 
White, extremely narrow and indistinct scarcely byssoid. 
ei scattered half an inch or more long round slightly i 
. ‘attenuated acute flexuous rigid as thick as a bristle, here 
end there, but rarely divided, of a rich rufous brown. The 
Subiculum sometimes runs up the base of the aculei for 
. 
