(!F SOUTH AUSTRALIA. 
147 
This is a very common species on dung, characterised by the greyish-brown, 
conico-campanulate pileus, often reticulated with lines and with appendiculate 
remains of the veil round the edge, the ascending grey clouded gills with black 
spores and the non-deliquescence of the gills. Considerable variation is met with, 
partly due to weather conditions such as moisture. Some specimens show the 
pileus readily separable from the stem, a tendency for the pileus to be sticky 
and a fugacious ring above the middle of the stem. These approach Anellaria 
fimiputris in these characters. 
***Pileus dry, smooth, slightly shining, not zoned. 
Xo species yet recorded for South Australia. 
****Pileus dry, smooth, zoned round the margin. 
223. Panaeolus acuminatus Fr. (L., acunmntus, pointed). — Pileus lfin. (3.5 
cm.), fin. (10 mm.) high, broadly conical, not definitely acuminate (in our 
specimens), slightly rivulose, opaque, when dry near Light Buff (XV.), when 
moist with a broad darker band near the margin, margin slightly incurved. 
Gills adnate, slightly ascending, rather close, many short, narrow (about 3 mm.), 
blackish with whitish margins. Stem 2]in. (5.6 cm.), slender, substriate, pallid 
and slightly mealy above, fuscous brown below, base slightly thickened, slightly 
hollow, flesh brownish. Flesh of pilous thin, pale brownish. Spore mass black, 
spores microscopically black or blackish, lemon-shaped, 14 t'o 15 x 8.5 to 9 p. 
Ill garden. South Australia — Adelaide Hospital grounds. October. 
The Australian plant seems to differ from the. British ones in the pileus though 
broadly conical not being definitely acuminate and in the margin of the pileus 
not being at first crenulate. 
The species can be recognised by the broadly conical caqi, broader than that of 
P. retirugis and not approaching a hemispherical shape, by the black gills and 
the dark zone near the edge when moist. 
224. Panaeolus paludosus del. (L., pialudosus, belonging to a swamp). — Pileus 
I Jin. (4.3 cm.), conieo-hemisphei'ieal, then more expanded to convex, often with 
an obtuse umbo, smooth, surface dull, slightly rivulose, edge turned in when 
young, dark umber brown drying paler and warmer from the centre so that a 
dark peripheral ring may be present. Gills adnexed, moderately close, deeply 
ventricose, clouded grey. Stem up to 44in. (11.2 cm.), slender, a little flexuous, 
somewhat pruinose, slightly libiil lose, slightly hollow, dark brown below, paler 
above, slightly pruinose white at the base. Cartilaginous flesh of the stem 
different in texture from that of the pileus. Spore mass black, spores micros- 
copically blackish, the ends constricted (lemon-shaped), 10 to 13 x 7.5 to 9 p. 
In swampy soil. South Australia — Mount Compass, Upper Tuukalilla Creek, near 
Mount Burr (S.B.). April to June. 
tt Margin of the pileus straight, at first adpressed to the stem. 
PSATHYRELLA Fr. 
(Diminutive of Psfithyra.) 
“Pileus fleshy or submembranaeeous, regular; margin straight, at first 
adpressed to the stem. Stem central, confluent with the pileus. Gills adnate or 
free. Spores black or fuscous black, elliptical or oval, smooth, with an apical 
germ-pore. Cystidia present'. Growing on the ground or on wood; solitary or 
caespitose. ’ ’ — Rea. 
The species of Psalliip-elki are smlall, rather delicate, thin-capped mushrooms, 
often suggesting Copriims in appearance but with the gills not deliquescing. 
Features which distinguish them from Panaeolus are the striate pileus, the non- 
variegat'ed gills and the margin of the pileus not exceeding the gills. Two 
species have been recognised in South Australia. One of these, Ps. Svtscminata, 
is not uncommon in dense masses on the ground usually near decaying wood. 
The other is found in grassy places. 
