64 



viminalis, Labill., Mount Lofty, June, pileus chiefly Fuscous and Fuscous Black 

 (Ridgway, xlvi.), passing into Buffy Brown (xl.), pores near to but a little 

 paler than Maize Yellow (iv.), weight 6 lbs., spores oval, 53 x 3-5 /a; at base 

 of stumps. National Park, S.A., May, spores elongate, 5 to 8 x 22 jx. 



279 (iii., 176). Polyporus (Spongiosus) rufescens, Pers. We have col- 

 lected further fruiting specimens from the base of the cultivated olive pre- 

 viously mentioned and from the base of another olive, half a mile away, at 

 Beaumont, near Adelaide. This is probably a destructive fungus to the olive, 

 though the first tree mentioned shows as yet little ill-efifects, after nearly five 

 years' observation. In the case of the second tree, however, a large stem above 

 the affected site is dying back. Fruiting bodies, emerging after heavy rain, 

 have been found in January, March, June, July, and December. Spores 

 abundant, elliptical, 52 to 5-5 x 35 fx. 



280. Polvporiis (Spongiosus) Schweinitzii, Fr. Clel. and Cheel, Jour. Proc. 

 Roy. Soc, N^S. Wales, li., 1917, No. 50, p. 490. New South Wales: Mosman, 

 May, spores 5x3 ix.; Chatswood, June (Miss Clarke). South Australia: At 

 base of several living trunks of Eucalyptus ohliqua, L'Her., near Kuitpo Forest, 

 May, spores white, subspherical to elliptical, 8 /a, 8 x 5 to 65 fx. 



281 (iii., 177). Polyporus (Spongiosus) Albertini, Mueller. New South 

 Wales : Bullahdelah, August, spores numerous, mostly pale yellowish-brown, 

 some nearly colourless, 52 x 34 fx; Kendall, March, inside base of burnt trunk, 

 numerous brown spherical spores, 4 fx. In our previous two records, the spores 

 measured about 8 x 6 ft, i.e., were nearly twice as large as in the present two 

 records. In all, the plants resembled so closely P. Schweinitsii that they could 

 only be distinguished by the coloured spores. In one of the present and in one 

 of the previous records, the stems were moderately slender. 



282 (ii., 88). Polyporus (Ovinus) basilapiloides, (McAlp and Tepper). We 

 have been fortunate in finding a number of freshly-developed sporophores of 

 this interesting species at Monarto South, S.A., in May, 1921, and in showing 

 that these arise from a deeply-buried true sclerotium on which is superadded 

 the false sclerotium of mycelium and sand hitherto thought to be the only 

 underground development. The following is our description of the fresh plants : 

 — Pileus convex, up to 3^ inches in diameter, the centre shallowly pitted by 

 raised brown lines, the depressions paler, edge of the pileus crinkled and 

 irregular— the pitting is in some cases little marked, the lines being replaced 

 by rugosities. Pores up to ^ inch long, adnate, shortened externally, whitish, 

 orifices small. Substance tough. Stem above ground short, -| inch, \ inch 

 thick, colour of the cap, smooth or reticulated, covered with sand, sometimes 

 as a distinct stem passing down for an inch into the sand and mycelium ; the 

 stem is succeeded by irregular swollen masses up to 3 inches in diameter with 

 irregular constrictions, up to 6 inches long, composed of mycelium and sand, 

 without a definite crust ; below this false sclerotium is an irregularly rounded 

 cr elongated true sclerotium (sizes in inches 3^ x 2f , 3x2^, and 2x1^), with 

 an outer dark crust of mycelium and sand, on section somewhat moist, sticky, 

 cutting like firm cheese, the colour of doughy brown bread, not showing "cells" 

 like the sclerotium of P. mylittae, on chewing without taste but with some 

 minute sand grains incorporated in it. One true sclerotium weighed 12f oz. ; 

 a pileus with false sclerotium 28 ozs. Spores white, elongated, narrow, 

 14x4 5 fx. Colour tints noticed: Pileus at edge near Cinnamon Orange (xxix.), 

 or Mikado Brown (xxix.) to Vinaceous Cinnamon (xxix.) in centre; in other 

 plants near Cinnamon Buff (xxix.) between the reticulations, which are Mikado 

 Brown ; stem colour of cap. In sand in mallee country recentlv burnt over, 

 Monarto South. May 28, 1921. (PI. ii., fig. 2.) 



