Murrill: Light-Colored Resupinate Polypores 303 



34. Poria linearis sp. nov. 



Effused for many centimeters, continuous, inseparable, thin ; 

 margin not cottony, but membranous to leathery, appressed, broad 

 and conspicuous, white or whitish ; context quite conspicuous, 

 tough, membranous, white to cream-colored, persistent ; hyme- 

 nium appearing in scattered areas over the subiculum, becoming 

 continuous but remaining somewhat uneven, white to pale- 

 isabelline and at length pale-avellaneous ; tubes rigid, thick- 

 walled, oblique and appressed, often elongated to 1 cm. in length, 

 3 to a mm. or larger, mouths irregular, edges subentire ; spores 

 pip-shaped, smooth, hyaline, 5-7 x 3-4 p. 



Type collected on a dead, standing, corticated, hardwood trunk 

 at Marraganti, Panama, April 3-9, 1908, Robert S. Williams 

 1127. Mature specimens are remarkable for the series of inter- 

 rupted parallel lines made by the obliquely appressed, greatly 

 elongated tubes. 



35. Poria hondurensis sp. nov. 



Effused for several centimeters, the area covered much longer 

 than wide, continuous, inseparable, thin ; margin not cottony, in- 

 conspicuous, white ; context inconspicuous, a mere whitish mem- 

 brane; hymenium even, milk-white and unchanging, considerably 

 cracked in dried specimens ; tubes rigid, angular, less than 1 mm. 

 long, 3-4 to a mm., edges thin-walled, entire ; spores ellipsoid, 

 smoth, hyaline, 4x2.5^. 



Type collected on the trunk and branches of a dead hardwood 

 tree in British Honduras, during the winter of 1907, by Morton 

 E. Peck. The wood remains rather firm but the bark has disap- 

 peared where the fungus occurs. 



36. Poria Johnstonii sp. nov. 



Effused for several centimeters, becoming continuous by con- 

 fluence, inseparable, thin ; margin conspicuous, cottony, milk- 

 white even in dried specimens, much reduced with age ; context 

 thin, milk-white, of loosely-woven, cottony strands quite different 

 from- the usual membrane ; hymenium uneven, white to cream- 

 colored ; tubes oblique, uniform in size and appearance, about 

 1 mm. long, angular, thin-walled, 3 to a mm., the edges projecting 

 in long teeth; spore characters not satisfactorily obtained. 



