TRICHODERMA y i r i d e .
Green and White Trichoderma.
m
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C la s s a n d O b d e i i CRYPTOGAMIA FU N G I,im « ._N a t . O e d . GASTROMYCI!
Link.
G EN E R IC CHARAC TER .
Peridmm indeterminatum, e floods ramosis implexis conlextum, demum in medio
evanescens. Sporidia minutissima, sicca, conghbata. F rie s .
Peridium indeterminate, composed o f branched interwoven filaments, at
k n g th obliterated in the centre. Sporidia very minute, dry, collected
into a mass.
s p e c i f i c c h a r a c t e r .
T richoderma v ir id e ; subrotundum, album, floods densissime cmlextis demum
fug a d bu s: sporidiis viridis copiosis.
T. roundish, white, the flocci very densely interwoven, at length obliterated
: sporidia green, numerous.
T richoderma v irid e, Pers. Disp. Meth. Fung. p . \2 .—Syn. Fung. p. 231.—
Alb. et Schwein. p. \S5.~Nees, Syst. p. 21. t. 6. f. 7 i.~M a r t. Fl. Frlang.
p . 3 6 l.—Schwdn. Fung. Carol. No. 518.—Greu. Fl. Edin. p. 465.
P y e e n ium lig n o rum , a, Tode, Fung. 1. p. 33. t. 3. f. 29.
Sphasria olivácea, Willd. Fl. Berol. p. 416.
H ab. On the trunks and branches o f prostrate decaying trees, in autumn.
Frequent.
Plant gregarious, at first very white and cottony, varying greatly in size,
1-4 lines broad, mostly o f a roundish form, somewhat depressed, distinct,
or confluent, of a firm consistence, b u t entirely floccose, and very
soft on the surface. The sporidia are globose, very minute, o f a green
colour, and collected into a mass in the centre of the p eridium; the
summit at length gives way, the filaments appear to be quite obliterated,
and the sporidia, which are o f a dry nature, escape; thus b y degrees
the white colour of the flocci is superseded by the green colour of the
sporidia.
1 his curious fungus, of which a representation is now for the
first time given in a British work, has little real affinity with
other known species. W i l l d e n o w considered it as so nearly
related to the Sphcerioi, that he placed i t among them. F r i e s
VOL. V.