284 
THE LARGER EUXGI 
449. Hymenogaster reticulatus Cuiin. (L., reti-oulatiis, reticulated). — Plants 
subglobose, to over Jin. (15 nmi.) diameter, bright ocdiraceous or yellowish 
brown. Peridiuin 120 to 300 thick, of densely woven hyphae which exteriorly 
are more loosely arranged, not gelatinized. Gleba ferruginous, cells subglobose, 
minute, 5 to (i mm., empty; tramal plates 50 to <S0 ^ thick, of woven,, strongly 
gelatinized hyphae, seissile at the gussets; basidia apparently 2-spored. Spores 
fusiform, both ends acuminate, or spindle-sliaped, clear fuscous brown, IS to 22 
X 11 to 15 f). (including spindle and reticulations), strongly and coarsely reticu- 
lated, wings to 3 tall, endospore 1 /r thick. — Cunningliam. South Australia — 
National Park. Tasmania. April. 
Jlymenogastcr tasmanicus Gunn. (Tasmania); JI. aureus Rodw. (Tasmania); H. 
fusispoo'us (Massee et Rodw.) Gunn. (Tasmania) ; II. nanus Mass, et Rodw. 
(Tasmania); 11. alhdlus Mass, et Rodw. (Tasm., N.S.W.) ; 11. zeylandicus Petch 
(Geylon and N.Z.) ; and 11. macrosporus Gunn. (Tasm.) have not yet been recorded 
from South .Australia. 
Section III. — -Peridium with radicate strands, without a columella; spores 
globose, commonly sculptured, rarely smooth,. 
OCTAVIANIA Vittadini. 
(.\fter Dr. A^incent Ottaviani.) 
Plants subglobose or pyriform, attached by radicate strands. Peridium simple, 
rarely of two layers, sometimes scanty and in rare cases wanting at maturity, of 
woven partly gelatinized hyphae, or pseudoparenchymatous. Gleba of permanent 
tramal plates anastomosed to enclose cellular or labyrinthiform cavities lined 
with a pei'manent ])alisade hymenium : columella absent; sterile base present or 
absent. Spores hyaline or less frequently coloured, globose, echinulate, verrucose, 
reticulated, or rarely smooth; basidia subclavate or cj-lindrical, bearing 2 to 
4 spores on short but stout sterigmata. Growing partially buried in soils rich 
in vegetable debris. — Cunningham. 
KEY TO THE SPECIES. 
Spores perfectly smooth. 
Spore wall to 4 p. thick Octaviania Clelandi. 
Spore wall 0.5 to 1 p thick 0. levispora. 
Spores covered with coarse or fine echinulations, or 
finger-like processes. 
Spines appearing as finger-like processes. 
Spores 10 to 12 /X 453. 0. pallida. 
Spores 12 to 10 M 0. seminuda. 
Spines appearing as coarse or fine echinulations. 
Spines minute, 0.5 p or less 450. 0. australiensis. 
Spines coarse, 2 to 3 p long. 
Spores hyaline 0. flam. 
Spores coloured. 
Spores 9 to 12 /X 0. Hinshyi. 
Spores 14 to 18 p or more 0. iasmanica. 
Spores reticulated. 
Spores 0 to 10 p and hyaline. 
Reticulations vaguely defined 451. 0. glahra. 
Reticulations sharply defined 452. 0. brishanensis. 
Reticulations in the form of striae 454. 0. striata. 
Spores 10 to 22 p, coloured 0. densa. 
450. Octaviania australiensis Cke. (Pertaining to Australia). — Plants sub- 
globose, J to lin. (1 to 2.5 cm.) diameter, smooth, cream-coloured becoming 
brown. Peridium 100 to 150 p. thick, of woven non-gelatinized hyphae. Gleba 
cream-coloured -or ochraceous, cells subglobose or la.byrinthiform, small, empty, 
larger torvards the centre; sterile base present or absent; tramal' plates 35 to 
60 p thick, of woven non-gelatinized hyphae, seissile; basidia chiefly 2-spored. 
Spores globose, subglobose or even shortly elliptical, 8 to 10 x 6 to 9 tinted 
ferruginous, shortly pedicellate, covered with fine, moderately, closely arranged 
