bb) Tubes deeply and unequally sunk in the substance of the pileus ; 

 substance between the tubes like that of the pileus. 



TRAMETES. Tubes subcylindrical, not stratose ; plant corky, sessile. 



DEADALIA. Tubes sinuous, labyrinthiform; plants corky, sessile (should not be 

 confused with certain species of Lenzites and Irpex, where forms of Daedalea 

 confragosa and D. unicolor may be sought. 



HEXAGONIA. Tubes from the first dilated in hexagonal channels, not stratose; 

 plants corky, sessile. 



Sclerodepis. Like Trametes, but margin of pileus acute, and dissepiments of the 

 tubes often dentate, 

 aa) Tubes lamellar, i. e., arranged in distinct radiating, or concentric rows. 



LENZITES. Tubes near point of attachment, elongate, radiating, formed by the 

 anastomosing of lamellae which are free at margin. See Lenzites of the 

 Agaricaceae. Daedalia confragosa possesses forms which have been describ- 

 ed as Lenzites. 



FAVOLUS. Tubes large at first, radiating from a central stipe, or from a lateral 

 attachment in sessile or dimidiate forms ; plants tough and fleshy. 



CYCLOMYCES. Lamellae or tubes in concentric circles, stipe central or sub- 

 central, or none, 

 aaa) Tubes separate, clustered or scattered, cylindrical or funnnel form. 



SOLENIA. Tubes at first clothed in a subiculum (often crowded in the subiculum 

 like Cyphella, suggesting a relationship with the Thelephoraceae, where 

 Massee places it;. 

 aaaa) Tubes in the summit of small papillae, distinct. 



POROTHELIUM. Plants resupinate, membranaceous. (Should it go in the Hyd- 

 naceae ? See Massee). 

 aaaaa) Tubes bearing papillae at the center. 



Theleporus. Tubes regular, continuous, pahllae equal to the tubes; plants mem- 

 branaceous. 



BBB) Plants with a leathery fibrous pileus and a tremelloid hymenium. 

 GLOEOPORUS. Tubes as in Polyporus. 



BBBB) Plants waxy, gelatinous or tremella hke. 

 MERULIUS. Tubes formed of shallow, irregular, reticulate folds or wrinkles. 

 Laschia. Tubes as in Polyporus; pileus gelatinous, sessile or with a central stipe. 

 Campbellia. Pileus gelatinous, drying horny, stipitate ; tubes large, angular, 

 edge frequently serrate or dentate ; like Boletus but tremelloid. 



Mycodendron. Plants dendroid; stipe dilated below, bearing above several pilei 

 in acropetal succession ; pilei gelatinous ; hymenium tubercular or with 

 irregular folds. 



AA) Plants bearing the hymenium in numerous irregular closed chambers, as 

 well 'as in exposed pores, 

 a) Plants resupinate. 

 Myrjadoporus. Hymenium cellular, porous ; pores of the surface open, others 

 enclosed in the pileus, variously directed, short ; plant fleshy (possibly an 

 abnormal form of Polyporus). 



