OP SOUTH AUSTRALIA. 
S!) 
Stem up to 2 to Sin. (5 to 7.5 cm.), very stout (up to J tin., 3.7 cm., thick) to 
moderately slender (2 cm. above, 1 cm. below), smoky punctate or slightly fib- 
rillose or with tne cuticle splitting, whitish or with tints of Mars Yellow, Light 
Payne's Grey (XLIX.) or brown. Flesh thick, white, tough in the stem; in 
shaded places, the pilei may be almost translucent, in exposed situations quite 
opaque and tough. Spores elliptical, with a large globule, 7 to !l x .3 to 6 p. 
Year the bases of Eue.alypts, living and dead. South Australia— Mount Lofty 
Ranges, Mount Barker, Clarendon district, Kuitpo, Encounter Bay. Queensland, 
Xew South Wales, Victoria, Tasmania, Western Australia. April to Xovember, 
but chiefly in autumn and winter. 
This, our common large “phosphorescent” species, is readily recognised by 
its large size, crowded lmbit. and situation al the bases of Eucalyptus trunks 
and stumps. 
90. Pleurotus ostreatus (Jacq.) FT. (L., ostren, an oyst'er). — Pilous up to Alin. 
(13.7 cm.), convex round the edge, concave in the centre, surface dull, in places 
with some innate fibrils, edge ini timed when young, slightly so when expanded, 
Tawny Olive (xxix.), more umber in places, becoming ochraeeous tawny or 
darker in the centre (yellowish brown with a bronze tint, dark-browm in the 
centre). Gills deeply decurrent, moderately close, very narrow (under [in., 
0 mm.), dingy cream-coloured becoming slightly brownish. Stem excentrie to 
nearly lateral, sometimes with several pilei, -tin. (10 cm.), stout (up to If to 
Pin ., 3.1 to 3 cm. thick), marked with gill-lines above sometimes ending in brown 
thread-like reticulations, attenuated at the base, very tough, pallid becoming 
tinted brownish, sometimes with ligulate scales with brownish tips pointing 
upwards. Flesh very thick, 1 [in. (3.1 cm.). Spores narrow pear-shaped, 9.5 to 
15 x 4.5 to 5.5 p. South Australia — On stem and branches of living Myoporum 
insntare R. Br., the Blutf, Encounter Bay. May, August. 
These specimens differ from typical P. ostreatus in the longer stem which tends 
to become brownish and is sometimes scaly. The species can be readily recognised 
by its large size, excentrie stem, the brownish tints on the pileus, the deeply 
decurrent gills, and the absence of luminescence. 
91. Pleurotus malleeanus CleL (A coined Latinized word referring to the 
habitat). — Pilous up to 44in. (11.2 cm.), convex, edge a little turned in, smooth 
to very knobby and irregular in places, moist-looking, near Cinnamon Buff 
(XXIX.). Gills decurrent, close, fin. (ti mm.) deep, near Pinkish Buff (xxix.). 
Stem 1] to 4in. (3.1 to 10 cm.), central, excentrie or lateral, lin. (2.5 cm.) 
thick above, equal or markedly attenuated downwards, tough, solid, white, mostly 
buried. Flesh very thick or reduced to Jin. (1.2 cm.). Spores elongated, 8 to 
10 x 4 p. At the bases of old stumps of mallee (lineal up tun sp.) in sand. 
South Australia — Monarto South. May. 
92. Pleurotus hepatotrichus (Berk.) Clel. (LcnHnus hepatotrichus Berk. 
Probably also Pleurotus ohaetophyllu s Bare.). (Gr., hepar, hr pat os, the liver; 
thrix, trirhos , a hair). — Laterally contracted to a floccose stem-like base. Pileus 
up to 1 Ain. (3.7 cm.) laterally, 1 J in. (3.1 cm.) long, usually less, convex to plane 
or even depressed or fan-shaped, the edge sometimes slightly sinuate, pallid 
brownish to dark-brown or blackish, the edge often paler (lighter than Sayal 
Brown, xxix.), greyish pruinose from a velvety matt of white hairs, rarely 
becoming polished. Gills decurrent to the attachment, close, narrow, cream- 
coloured acquiring a rusty or dirty bully tint, erenulate and rusty brown when 
dry, bristling with cystidia. Flesh whitish, thin, attenuated outwards, not 
gelatinous, but the thick cuticle black and gelatinous-looking. Spores slightly 
curved, hyaline, 7.3 to 9 x 3.5 to 4.2 p. Cystidia fusiform, acuminate, sometimes 
bent at. an angle near the base, thick walled, slightly yellowish, 57 to 90 x 11 to 
15 p. On the underside of fallen Eucalyptus bark or on rough trunks of living 
Euealypts. South Australia — Mount Lofty, Xafional Park, Encounter Bay. 
May, July. 
This is a common species on fallen Eucalyptus bark, etc., and is characterised 
hv the hairy brownish pileus and the cream-coloured to dirty buff-tinted gills 
bristling with cystidia. as seen with a lens and decurrent to a lateral stem-like 
base. The plants are rather tough and consequently may be placed by some in 
the genus Lent'mus. 
93. Pleurotus viscidulus (Berk, et Br.) Clel. (Paulis visciduhis Berk, et Br.). 
(I.., visniiin, mistletoe, bird-lime). — Pileus up to B Ain. (9 cm.) laterally, 2in. 
(5 cm.) long, flabelliform, somewhat convex, depressed towards the lateral attach- 
ment, shining, smooth, viscid when moist, sometimes finely striate, edge wavy and 
