486 Murrill : Polyporaceae of North America 



Flaviporellus Splitgerberi (Mont.) 



Polyporus Splitgerberi Mont. Ann. Sci. Nat. Bot. II. 16 : 109. 



1 84 1. Syll. Crypt. 164. 1856. 

 Polyporus sulphuratus Fr. Nov. Symb. 79. 185 1. 

 Polyporus rheicolor B. & C. Jour. Linn. Soc. Bot. 10 : 313. 1868. 



This plant was described from Surinam, Mexico and Cuba 

 successively. It is apparently rare, being known chiefly from 

 type collections at Kew, Paris and Upsala. 



3. Aurantiporellus gen. no v. 



Type : Polyporus albolutcus Ell. & Ev. 



Hymenophore large, annual, epixylous, effused, immarginate 

 or narrowly reflexed ; surface azonate, soft, anoderm and orange- 

 colored when young, becoming slightly encrusted and darker with 

 age ; context orange-colored, extremely soft and spongy through- 

 out ; tubes orange-colored, very large, thin-walled, irregular, 

 lacerate, fragile ; spores smooth, hyaline. 



Aurantiporellus alboluteus (Ell. & Ev.) 



Fomes albolutcus Ell. & Ev. Proc. Acad. Sci. Phila. 1895: 413. 



1895. 



Described from material collected by Crandall on decayed 

 trunks of Abies subalpiua in Colorado as follows : 



" Effused and laterally connate for several centimeters, about 

 1 cm. thick and 5-6 cm. broad, immarginate and entirely resupi- 

 nate or, in some specc. with a very slight, reflexed margin of 

 soft, spongy texture and light orange color within and without. 

 Pores large, 1-2 mm. diam., with a thin, membranaceous, white, 

 toothed margin." 



In 1898 (Bull. Torrey Club 25: 513), the authors add the 

 following notes : 



" Additional specimens and notes of this species show that it 

 is a Polyporus and not a Fomes. In the fresh growing state it is 

 very juicy and absorbs moisture to a remarkable degree so that 

 water may be squeezed out of it as from a sponge. Some speci- 

 mens were 3-4 cm. thick. When mature the pores are prolonged 

 on one side so as to resemble the teeth of an Irpex. The spores 

 are oblong, hyaline, 8-12 x 3 (i. Allied to Polyporus laicospongia 

 Cke. & Hark." 



