OF SOT’TII AUSTRALIA. 
223 
Abnormal forms, together with normal ones, were found on the underside of 
dead Casuarina stricta wood on Pearson Islands. These were disc-shaped, the 
orifices unduly large (2 mm. or more), the dissepiments thin. 
.3-13. Hexagona G-unnii Bei'k. (After Ronald Campbell Gunn, F.R.S., 1S08-1S81, 
the Tasmanian botanist, at one time private secretary to Sir John Piruiklin). — 
Thick, more or less hoof-sliaped, !1 to 2jin. (1.8 to 5.(5 cm.) laterally, rarely up 
to lin. (2.5 cm.) from before backwards. Upper surface irregularly convex, 
sometimes extending upwards at the attachment, tomentose becoming smooth, 
occasionally polished, rarely rougli, sometimes with raised and reticulated lines, 
pallid with an ochraceous tint, rarely with dark brown tints or dark tan-coloured, 
wlien old sometimes dai'k brown, free edge rather rounded, llymenial surface 
convex or concavo-convex, often descending, rarely bracket-like; pore orifices 
pentagonal, sometimes elongated, irregular, varying in size, 1 to 2.5 mm. wide, 
dissepiments usually thick and rounded, sometimes rather tliin, sometimes 
imperfect; tubes concolorous with the upper surface, extending to irregular depths 
up to 10 mm. into tlie pale umber-brown corky-woody context. Spores elongated. 
Figure 60 . — Hexagoim Gunnii Berk. (No. 343). Mount Wedge (E.P.). 
Note large pores. 
with a large round or oval gutta, hyaline, 15 to 24 x (i.5 to 8 /x. Up to 10ft. or 
more from the ground on trunks of dead or sick Eucalypts (E. odorata Behr.; et 
Schh, E. viminalis Labilh). South Australia— Glen Osmond hills, National Park 
Encounter Bay district, Kinchina, Quorn, Mount Wedge near Elliston (E.P.).’ 
Victoria. New South Wales. Tasmania. Western Australia. January, April to 
September. (Figure 50.) 
The species forms rather small hoof -shaped brackets witli large (lentagonal 
orifices on the trunks of dead or dying Eucalypts. The very large, elongated 
colourless spores hall-mark tlie species. ‘ ' ’ 
2. Tubes torn into teeth. 
IRPEX Fr. 
(L., irpcx, a harrowx) 
Pileus corky, coriaceous or membranaceous; dimidiate or resupinate; sessile. 
Tubes homogeneous, alyeolar at first, tlien becoming torn into teeth or plates 
Mesh white or coloured. Spores white; elliptical, oyal, globose, cylindrical or 
elliptic-oblong ; smooth or punctate. Cystidia present or absent. ' Growing on 
wood, rarely on the ground.” — Rea. 
Irpex (litters from Polystictus in the tubes becoming torn into teeth or plates 
mstea,d of remaining regular. Some authorities place the genus under Hydnaceae’ 
considering tlie lacerated teeth or plates as representing confluent siiines. The 
only (lommon species with us is tlie resupinate Poria-like, buff-coloured I. oUiquus 
found growing on fallen logs and sticks, the trunks of Eucalypts and similar 
