NO'l'l': ox POLYPORUS LUCJDUS LEYSS.. AND ITS 

 i':i''Kl-X'r ox TITE WOOD OF THE WILLOW. 



By Paul Andries vax der Bijl, ALA., D.Sc, F.L.S. 

 {Plates 12-16 and Si.v Test Fif/ttrcs.) 



1.\TU(JDUCT1()X. 



This fungus was first brought to my notice by Master J. 

 Sellschop, and found to be very plentiful under Acacia trees 

 around Pretoria. While hunting for more material of this 

 fungus, Mr. H. F. Cuti' came across it on the roots and stem 

 of a large live willow tree- 

 Subsequently I had the plant from ditterent locahties, and 

 it is evidently one of our most common Polyporacese. 



I have to acknowledge the assistance given by Mr. C. li. 

 Lloyd, of Ohio, in determining and verifying many of my speci- 

 mens, and am also indebted to Mr. L. O. Overholts, of Pennsyl- 

 vania. 



I have, moreover, to thank those wlio have favoured me 

 with specimens, and am grateful to Mr. 1. B. Pole-Evans, M.A.. 

 B.Sc, F.L.S. , Chief t>f the Division of Botany, fi^r letting me 

 have samples of the material forwarded him. 



The drawings were kindly made for me by Miss K. A. 

 Lansdell, of the L^iion Department of .Vgriculture. 



FuNca OCCURRING IN SoUTH Al-RICA WHICH ARI-: EITHER CLOSE 



TO OR SvN()iX>'M()US WITH roLV i'( >iirs Lixinrs. 



What is evidently a sessile form of Polyporus lucid us has 

 been descril)ed l)y Mtu-rill* under the name Gaiiodcniia sessile 

 Murr. {Polyporus sessilis), and he gives its distribution as Con- 

 necticut to Missouri, Alabama, and Louisiana. Ovcrholtst men- 

 tions the following as .synonyms of /'. lucid us: 



Boletus lucidus Leyss. ; 

 Ganodenna sessile Mur. : 

 Ganodenna suhperforatuui 



The fungus Polyporus fulrellus llrcsadoLa is e\'idently i)nly 

 a sessile form of P. lucidus: indeed, had we onlv the fungu- 

 from tile stem o.f the willow, and n^i fruni the roots alsc\ we 

 would have referred it to \h\> spc'-ic-^. 



Of Polyporus sessilis Slur [Gauiulcnua sessile) LKncli 

 says: "As usually a])])lied ii is the sanir a> resinaccus. We 

 have, however, in the I'nitc-d .Stales, an annual sessile species 

 which we have found on willow. The >in-face is not so dark 

 nor strongly laccate a,- the preceding plant, and it is broadh- 

 attached, ne\er any intimation of a stipe."" I lia\e a single speci- 

 men of Pdlyporiis rcsiiiaceus l)ou<l., kindK named for me 1)\' 



"..Vlurrill. Win. \. : "Xmih American hlMi-.t." S |2|, 12c. 

 t Overholts. L. (). : ./;;;;. \lijs. Hot. (.nird.. 1 ( .Marcli. 1914), 12,5. 

 itl.tfiyd, ('. (].: "Sxnoijsis :«f the -Soction Ajnis of the Genus Poly- 

 porus " ( i<;i5 ». ,?7L 



