604 MuRRiLL : The Polyporaceae of North America 



The specimen upon which Leysser's Bolehis liicidus is founded 

 was collected by Curtis on a decaying hazel stump near London 

 in November, 1780, and figured in Flora Londinensis, 4 : //. 22^. 

 Leysser's description is as follows : — 



" Boletus lucidus stipitatus, pileo coj-iaceo castaneo liicido sulci s circttlaribtis, poris 

 miniitissimis, albis, stipite laterali.^'' 



Specimens collected by Rev. M. A. Curtis in South Carolina 

 seemed to Berkeley sufficiently distinct from Leysser's plant to 

 constitute a new species, which he thus describes in Kew Garden 

 Misc. I : 101. 1849 : — 



" Pileus excentric, soft-corky, sulcate, zonate, ochroleucous, in places sanguine- 

 lacquered ; stipe elongated, rugose, sanguine-lacquered ; hymenium from white to 

 ochraceous, pores punctiforra." 



A Special study of many specimens called Poly poms Curtisii 

 Berk, shows them to be only variations of G. psetidoboletns due to 

 age, rapidity of growth, and perhaps to differences in the host. 

 The yellowish form so common in the southern part of the United 

 States is figured by BuUiard and Gillet as also occurring in France, 

 while farther north the color is usually darker and more lustrous, 

 the texture firmer, and the hymenium less stratose. These differ- 

 ences are not sufficiently constant, however, to enable one to 

 separate the forms geographically. 



Another interesting variation observed by Langlois in Loui- 

 siana is so distinct from the ordinary form of the plant that it 

 might easily deceive the skilled mycologist. Specimens in the 

 Underwood herbarium have the stipe exactly central, the pileus 

 very even and thin, at first deeply infundibuliform with white 

 margin, at length becoming nearly plane, reddish-brown, and pol- 

 ished, with the margin concolorous. 



3. Ganoderma sessile sp. no v. 



A large sessile plant, with wrinkled varnished cap and acute 

 margin, found on decaying deciduous trees. Pileus corky to 

 woody, dimidiate, sessile, imbricate or connate at times, conchate, 

 thickest behind, thin at the margin, 5-15 x 7-25 x 1-3 cm., 

 yellow to reddish-chestnut, at length opaque dark brown ; surface 

 glabrous, laccate, shining, radiate-rugose, concentrically sul- 

 cate, usually marked near the margin with alternating bay and 

 tawny zones ; margin very thin and acute, usually curved down- 



