Some South African Stereums. 
153 
Few Stereums have conducting ducts in the hymenium. Their presence 
should aid in recognising the above. 
Stereum bicolor, Fr. 
Plants sessile, largely resupinate ; pileus soft, 1-5-3-5 cm. broad X 
1-1-5 cm. long x -5-2 mm. thick, surface zonate or azonate, faintly villous, 
becoming glabrous, light umber brown ; hymeniun even, glabrous, white ; 
intermediate tissue umber brown, darker than surface ; cystidia encrusted, 
spores hyaline, 4-5 x 3-4 fi. 
Decaying wood at Durban, by P. van der Bijl. 
This species is recognisable by its soft consistency, the contrast in colour 
between the upper and the under surface, and the colour of the intermediate 
layer. 
Stereum cinereum, Lev. (Fig. 4.) 
Plants sessile, effused — reflexed, pileus coriaceous, cuneate, thin, some- 
Fir:. 3. 
Fig. 4. 
