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HANDBOOK OF 
Family IV. HYMENOGASTRACEiE. Vitt. 
Subterranean, subglobose or tuber-like, peridium not open when 
mature, rarely obsolete ; gleba fleshy or gelatinous, putrescent, 
excavated with numerous bymenial cells, without capillitium ; 
spores stipitate, then free. 
Genus 34. OCTAVIANIA. Vitt. Mon. Tub. p. 15. 
Peridium continuous, or sometimes tessellately cracked, even, 
rather soft, not separable, produced downwards into a sterile base ; 
gleba continuous with the peridium, multicellular, rather soft, 
mutable, at length gelatinous ; trama byssoid ; spores sphajroid, 
dark when mature, echinulate. 
1339 . Octaviania australiense. Berk. — Hydnangium aus- 
traliense, B. 4' Br. (?). 
Irregular, subglobose, elongated, or tuberiform (1-2 c.m.), peri- 
dium thin, rugose, ocbraceous ; gleba paler, cells small ; spores 
globose, echinulate (10-12 p), pale yellowish, hyaline. 
Under tea tree. Victoria. (Pig. 126.) 
1340 . Octaviania alveolata. Che. 8; Mass. Grev. xvi., 2. 
Subglobose or irregular (|-1 in. diam .), whitish, then ochraceous, 
sterile base obsolete, paler within and lacunose ; spores globose, 
alveolate, 10 p diam., pale brown. 
In the ground. Victoria. 
1341 . Octaviania Archeri. Berk. FI. Tasm. 263. Sacc. 
Syll. 529. 
Obovate, small, with a large sterile base, without fibrils ; gleba 
compact ; spores globose, echinulate, 21-22 p diam. 
On the ground. Tasmania. 
Genus 35. RHIZOPOGON. Fr. Symb. Gast. 
Peridium globose, tuberiform, attached to a tough fibrous my- 
celium ; gleba cellular, rather compact, at first white, then 
coloured, cells minute, irregular, at first empty ; spores elliptic, 
oblong, 1-2 guttulatc, hyaline, pale coloured. 
1342 . Rhizopogon luteolus. Fr. Symb. Gast. p. 5. 
Peridium deformed, commonly spbreroid, kidney-shaped or ovoid, 
fibrils rooting, lax, at first white, then reddish or dingy yellow, 
becoming yellowish, within livid or greenish -grey ; gleba at first 
white and unchangeable, lacunose, cells rounded and broken, dis- 
sepiments narrow, easily broken, basidia linear-oblong, bearing 4-6 
spores ; spores ellipsoid, pale yellow or nearly hyaline, even, 7-16 
x 4-6 p. 
In sandy soil. Victoria. (Pig. 127.) 
Genus 36. HYMENOGASTER. Vitt. Mon. Tub. 20. 
Peridium fleshy or thin, running down into an absorbing base, 
gleba fleshy, cells at first empty, radiating or irregular, trama of 
elongated cells, but not floccose, hence not easily separable ; spores 
ovate, fusiform, or lemon-shaped, mostly papillate, thick, even or 
rugulose, coloured when mature. 
