484 Murrill: Polypokaceae of North America 



Beaumont, Eavle ; Cuba, Earle, Underwood & Earlc 7j8, ygj, 

 1104a, IJ16, ijig, T446. 



t 



w 



Microporellus holotephrus (B. & C.) 



Polypoms holotephrus B. & C. Jour. Linn, Soc. Bot. 10:315. 1 868. 

 Described as follows from no, j§2 of Wright's Cuban collec- 

 tions, although Guiana {Lepricttr g2g) is mentioned as the habitat. 



" Luridus ; pileo tenui coriaceo flabelliformi, e basi attenuata 

 lineato, hie illic vinoso-tincto zonato, zonis alternis subtiliter velu- 

 tinis scabris brunneis; poris 5-6-gonis brevibus minimis. 



'* On dead wood. Pileus 2\ inches broad, 2 inches long, 

 radiato-lineate ; pores A-^ inch in diameter. A very curious 



species 



J I 



This peculiar plant, known only from the original collections, 



M. 



every respect except color. One could almost believe that a few 

 very young plants of M. dealbatus had for some cause turned en- 

 tirely black in drying, if the numerous other collections of this 

 species indicated the slightest tendency in that direction. Another 



inconspicuous to the unaided eye. 



lioloteph 



22. POLYPORUS (Mich.) Paul. Icon. Champ, pi. 13, I793- 



Type : Polypoms Ulmi Paul, 

 Polypoms (Mich.) Adans. Fam. 2: 10. 1763. Not" associable 



with a previously published binomial. 

 Polyporcllus Karst. Medd. Soc. Faun, et Fl. Fenn. 5: 37. 1879. 



Type : Polypoms bmmalis Fr. 

 Leiicoponts Quel. Ench. Fung. 165. 1886. Type: Leucoporus 



iubarins Quel. 

 Ceriopoms Quel. Ench. Fung. 167. 1886. Type : Boletus squa- 



mo sits Huds. 

 Melanopus Pat. Hymen. Europ. 137. 1887. Type: Melanopus 



sqitmnosHS (Huds.) Pat, 



Hymenophore annual, epixylous, small and simple, very rarely 

 large and compound- stipe central, excentric or lateral, much re- 

 duced at times in a few species, often partly or wholly brown or 

 black ; surface usually smooth, the margin at times ciliate ; con- 

 text white or yellowish, fibrous, tough to corky ; hymenium 

 porose, rarely alveolate ; spores smooth, hyaline. 



