180 Murrill: Polyporaceae of North America 



13. Cubamyces gen. nov. 



Type : Polyporus cubensis Mont. 



Hymenophore large, annual, epixylous, sessile, thin, dry, con- 

 chate ; surface pelliculose, glabrous, normally azonate ; context 

 white or yellowish, thin, homogeneous, very soft and elastic ; 

 hymenium concolorous, tubes small and regular, rather thick- 

 walled, firm and corky, mouths entire ; spores smooth, hyaline. 



Cubamyces cubensis (Mont.) 

 Polyporus cubensis Mont. Ann. Sci. Nat. II. Bot. 8 : '364. 1837 ; 



PI. Cell. Cuba 404. pi. 16. f. 3. 1842. 



Originally described from plants collected near Havana, Cuba, 

 by Sagra. It seems especially abundant in Cuba, but occurs also 

 in southern Florida and Central America. 



Cuba, Underwood & Earle 343, 344, 396, mi, 1204, 1443, 

 1368, Earlc & Murrill 140, 337, 334, 414 ; Florida, Lloyd ; Nica- 

 ragua, Smith. 



Species inquirendae 



Polyporus havannensis B. & C. Jour. Linn. Soc. Bot. 10 : 

 310. 1868. Described from specimens collected by Wright on 

 dead wood in Cuba as follows : 



"Pileo dimidiato convexo zonato fulvo-ochraceo e pubescente 

 glabro radiato-ruguloso, margine leviter pulvinato sterili pubes- 

 cente ; hymenio pallido, poris parvis subrotundis acie obtusis. 

 Pileus 2 inches wide, 1 inch long ; pores ^ inch in diameter. 

 Allied to P. anebus, B[erk]., but with larger pores." 



This species appears to be very near to C. cubensis. 



14. PORONIDULUS Murr. Bull. Torrey Club 31 : 425. 1904 



Type : Boletus conchifer Schw. 



Hymenophore annual, tough, sessile, epixylous, at first sterile 

 and cup-like, the fertile portion developing from the sterile ; con- 

 text white, fibrous, tubes short, thin-walled, mouths polygonal ; 

 spores ellipsoidal, smooth, hyaline. 



Species: P. conchifer (Schw.) Murr. [See Bull. Torrey Club 

 31 : 425, 426. 1904.] 



15. CORIOLUS Quel. Ench. Fung. 175. 1886. 

 Type : Polyporus zona tits Fr. 

 Hansenia Karst. Medd. Soc. Faun, et Fl. Fenn. 5: 39. 1879. 

 (Not Hansenia Turcz. 1844.) Type: Boletus lursutus Wulf. 



