AUSTRALIAN FUNGI. 
399 
2051. Arcyria serpula. ( Rost .) Mass. Mon. 1 64.— Hemiarcyria 
serpula. (Rost.) Mon. 267, Figs. 200, 227, 228. Sacc. Syll. 
1514. 
Either a vein-like, creeping plasmodioearp, usually anastomosing 
to form a net, or subglobose, scattered, and sessile on a broad base, 
wall thin, fragile, yellow, sometimes tinged brown ; mass of spores 
and eapillitinm yellow or orange ; threads of the dense capillitium, 
5-6 p thick, forming a net with numerous free ends, which usually 
terminate in a smooth, thin, tapering spine, 8-10 p long; spirals 
thin, not prominent, rather distant, furnished with numerous long, 
slender spinnles ; spores globose, with narrow, raised, flat bands, 
forming an irregular net work, 10-12 p diam. 
On rotten wood. N.W. Australia. N. Zealand. 
2052. Arcyria fuliginea. Mass. Mon. 169.— Hemiarcyria 
fuliginea. Gke. (f Mass. Grev. xyi,, 74. 
Threads anastomosing, spinulose, 3-4 p diam., spines on one side 
only, spirally disposed ; spores globose, smooth, scarcely dis- 
coloured, 8 p diam. ; mass of capillitium and spores sooty brown. 
(Description imperfect, the peridia being destroyed.) 
On leaves of Atherospermum. N.S. Wales. 
Sub-Section 2. Trichi®. 
Threads of capillitium free, simple, or branched, not anastomosing 
to form a network. 
Genus 10. TRICHIA. Haller. 
W all of sporangium single, dehiscing irregularly ; capillitium 
consisting of free, simple, or branched threads, having the wall fur- 
nished with raised bands, arranged in a spiral manner; spores glo- 
bose, epispore smooth or variously ornamented. — Mass. Mon. 173. 
2053. Trichia fragilis. Rost. Mon. 246, figs. 203, 204, 225, 
226. Mass. Mon. p. 176. Sacc. Syll. 1494.=Trichia 
lateritia. Lev. Sci. Nat. v., 167. Sacc. Syll. 1494. 
Sporangia varying from globose to pyriform, stipitate, or fasci- 
culate on a common stem, wall smooth, blackish or purple brown, 
pale brown or yellowish ; stem dark, longitudinally wrinkled, equal 
or tapering upwards, erect or curved, often twisted in the com- 
pound forms, inside of the wall often with coloured organic lumps ; 
tnass of capillitium and spores varying from dull orange brown to 
primrose yellow, separated from the hollow of the stem by a mem- 
brane ; elaters fusiform, 4-5 p at thickest part, sometimes branched, 
spirals fiat, rather broad, not very prominent, tips smooth, taper- 
ing to a thin point ; spores globose, minutely warted, 11-14 p diam. 
On wood, etc. S.W. Australia. Tasmania. N. Zealand. 
2054. Trichia varia. Pers. Rostfi. Mon. 251. Sacc. Syll. 
1497. Mass. Mon. 178. 
Sporangia diversely developed, either with a stem, or sessile ; 
elaters cylindrical, very thin walled, 4 p diam., with the 
