Murrill: Light-Colored Resupinate Polypores 87 



Type collected on fallen leaves and twigs in woods along the 

 river at San Antonio, Cuba, April 20, 1903, /. A. Shafer 253. 

 This may be a resupinate form of an undescribed species of 

 Coriolus, closely related to C. depauperatus, but with smaller 

 tubes. 



16. Poria regularis sp. nov. 



Forming small, rather thin patches 2 cm. or less wide, which 

 are continuous as far as they go and do not readily separate from 

 the substratum ; margin a thin membrane of white mycelium con- 

 nected with rhizomorphic strands and apparently disappearing 

 entirely with age, leaving simply a mass of tubes ; context thin, 

 white, not apparent in age; hymenium very even and uniform, 

 not glistening, milk-white, unchanging; tubes regular, angular, 

 thin-walled, entire, reaching 0.5 mm. in length, 4-^5 to a mm. : 

 spores hyaline. 



Type collected on a fallen, dead, corticated branch of some 

 hardwood tree at Morce's Gap, Jamaica, a very wet locality 5,000 

 feet above sea-level, December 29, 30, January 2, 1908-9, W. A. 

 & Edna L. Murrill 703. The abundance of moisture present 

 probably had something to do with the unusual form of the 

 hymenophore. 



17. Poria polyporicola sp. nov. 



Effused almost continuously for many centimeters over the 

 hymenium of an old polypore, inseparable, very thin ; margin 

 pure-white, exceedingly thin, diffuse, becoming discolored with 

 age ; context not apparent ; hymenium closely applied to the tubes 

 of the polypore, regular, even, white to pale-avellaneous-umbrin- 

 ous ; tubes exceedingly shallow, thin-walled, entire, rounded to 

 angular, white to slightly yellowish, 4-5 to a mm. ; spores hyaline. 



Type collected on an old hymenophore of Pogonomyces 

 hydnoides growing on a cypress log near Fort Myers, Florida, 

 February 29, 191 6, Paul C. Standley 12895. Among the tubes 

 are numerous sporophores of a minute brown species of Orbilia, 

 which apparently has something to do with their discoloration. 



18. Poria cinereicolor sp. nov. 



Effused for several centimeters over the surface and hymenium 

 of an old polypore, continuous, inseparable, very thin ; margin 



