ri 



* 



Murrill: Polvporaceae of North America 363 



This genus was founded on Phaeolus sistotremoides (Alb. & 



Schw.) Murr, and twelve other species, the majority of which I 

 do not consider congeneric with the type. When I pubh'shed the 

 genus Roinellia I was ignorant of the fact that Phaeolus had been 

 raised from the subgeneric rank assigned it in 1897 (Ann. Bot. 

 Buitenz. First Suppl. \12\ 



Species : P, sistotremoides (Alb. & Schw.) Murr. [see Bull. 

 Torrey Club 31 : 338-340. 1904]. 



15. COLTRICIELLA Murr. Bull. Torrey Club 31 : 348. 1904 



Type : Coltriciclla depetidens (B. & C.) Murr. 



Hymenophore small, annual, tough, epixylous ; stipe attached 

 to the vertex of the pileus ; surface of the pileus anoderm, zonate : 

 context spongy, fibrous, ferruginous, tubes angular, one-layered, 

 dissepiments thin : spores ellipsoidal, smooth, ferruginous. 



Species : C. depcndens (B. & C.) Murr. [see Bull. Torrey 



Club 31: 348. 1904]. 



16. COLTRICIA S. F. Gray, Nat. Arr. Brit. PI. i : 644. 1821 



Type: Coltricia pcrenjiis (L.) Murr. 

 Strilia S. F. Gray, Nat. Arr. Brit. PI. I : 645. 1821. 



(J 



?/ 



1886. 

 Quel 



Miicronoporns Ell. & Ev. Jour. Myc. 5 : 28. //. 8. 1889. 



Type : Miicrojioporus tovientosus (Fr.) Ell. & Ev. 

 Onnia Karst. Finlands Basidsv. 326. 1889. 



Type : Onnia circinata (Fr.) Karst. 

 Xanthochrous Pat. Cat. Tun. 51. 1897. 



Type : XantJiochrous tomentosus (Fr.) Pat. 



Hymenophore annual, terrestrial or humus-loving, simple, 

 small to medium, usually circular and central-stemmed ; surface 

 anoderm, brown, zonate or azonate : context brown, coriaceous to 

 spongy ; hymenium concolorous, covered with yellowish or whitish 

 powder when young, tubes thin-walled, at length fimbriate : spores 

 smooth, rounded, ferruginous, cystidia rarely present. 



Species : C. cinnamomca QdiCq.)Mmr., C. perennis (L.) Murr., 

 C. parvida (Kl.) Murr., C. torncntosa (Fr.) Murr., C. obcsa (Ell. 

 & Ev.) Murr., C. Memmingcri Murr. [see Bull. Torrey Club 

 31 : 340-348. 1904]. 



