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HANDBOOK OF 
2060. Didymium squamulosum. A. <$• S. Rtfki. Mon. 159, 
Jig. 148.=Didymium australe. Berk. Hdbk. N. Zeal. 191. 
Mass. Mon. 223. Sacc. Syll. 1301. 
Sporangia either hemispherical and flattened, or exactly globose, 
always with the stem slightly umbilicate at the base ; stem snow- 
white, entering within the sporangium, and expanding into a glo- 
bose snow-white columella : lower wall of sporangium and colu- 
mella smooth, upper part when mature split into simple oval scales ; 
threads of capillitium thin-edged, without colour, spreading out 
from the columella into numerous branches at a very sharp angle ; 
spores bright violet, almost smooth, 8-10 p. 
On wood, dead leaves, etc. Tasmania. Australia. N. Zealand. 
2061. Didymium spumarioides. Fries. Mass. Mon. 232. 
=Chondrioderma spumarioides. Fr. Rtfki. Mon. 174, figs. 
142, 145, 151. Sacc. Syll. 1209. 
Sporangia irregular inform, either snow-white on concolorous, or 
greyish on flesh colour, always standing in clusters on a strongly 
developed hypothallus ; columella either not recognizable or snow- 
white, free in the centre, or multiform, flesh colour; capillitium of 
colourless threads or bright violet, combined into a net ; spores 
violet, very spinulose, 8-13 p. 
On leaves, moss, etc. Queensland. 
2062. Didymium serpula. Fr. Mass. Mon. 234. Sacc. 
Syll. 1297.=Didymium complanatum. Batsch. Rtfki. Mon. 
151, Jigs. 166, IfeO. 
Plasmodiocarp either cushion-like, flattened, scattered, or else 
vein-like, creeping, now and then combined into an irregular net- 
work ; surface covered with grey, but not numerous, crystals ; 
capillitium of very thin threads combined into a dense net, remain- 
ing behind in connection with peculiar large cells ; spores bright- 
violet, nearly smooth, 7^-8 p. 
On leaves, etc. Queensland. 
Sub-Genus. IIemididymium. Mass. 
Capillitium usually dense, threads branching and anastomosing to 
form an irregular network throughout the capillitium , angles 
usually flattened, and more or less triangular. 
2063. Didymium pezizoideum. Mass. Mon. 239.=Chon- 
driodorma pezizoideum. Jungh. Sacc. Syll. 1256. 
Peridia somewhat nodding, whitish cinereous, arising from a 
simple, mealy, crustaceous membrane, cracking, but persistently 
composite, cup-shaped, discoid, stipitate ; stern awl-shaped, brownish, 
smooth, expanding at the base in a shining membrane, closely 
adnate to the matrix ; capillitium formed from a network of flocci ; 
spores violet, even, 8-9 p diam. 
On dead wood of Erythrina. Queensland. 
