164 Field Columbian Museum — Botany, Vol. i. 



P. versicolor (Linn.) Fr. 



On decorticated stump Picea Mariana, Tucker Co., near Falls 

 of Blackwater. Under bark of log Quercus alba, Monongalia 

 Co., near Morgantown {MillspaugJi). On various dead trees, 

 Feb., 1893 {Nut tali, 834). 



P. HIRSUTUS Fr. 



On dead twig cultivated Pyriis Ma/us, Monongalia Co., near 

 Morgantown. On dead Bctiila lutea, and on log Lii-iodendron 

 Tulipifera. A form with white spores, on roots fallen Bctula 

 lenta. Grant Co., near Bayard {Millspaugti). On Fagus atropuni- 

 cea, Keeney's Creek, Oct. 20, 1893 {Nuttall, 121 1). 



P. abietinus Fr. 



On fallen Tsiiga Canadensis, Grant Co., near Bayard [Mills- 

 paugJi). On Finns Virginiana, March 4, 1894 [Nuttall, 1420, 390).. 



MUCRONOPORUS E. & E. 



M. Everhartii E. & Gall. 



On Ulmus pubescetis, Nov. 6, 1893 [Nuttall. 1598). 



M. Gilvus (Sz) E. & E. 



On Castanea deniata, July 20, 1894 {Nuttall, 1169, 558). 



M. ferruginosus (Schrad.) E. & E. 



On Juglans cinerca, Aug. 29, 1893 [Nuttall, 1183). 



PORIA Pers. 



P. vulgaris Fr. 



On various dead limbs, Feb. 2 and Nov. 20, 1893 [Nuttally. 

 S33). A nodular form on oak ties, Nov. 5, 1894 [Nuttall). 



P. obducens Pers. 



On underside of dead log, Feb. 8, 1893 [Nuttall, 1297, 246). 



P. nigra Berk. 



On side and beneath dead Hicorial log. Effused, long and 

 narrow, perennial [Nuttall, 1268). 



P. tomento-cincta B. & R. 



Effused on bark underside of log Betula lenta, 60 x 30 cm. One 

 layer taken off on Sept. 16, the same surface of the bark was. 

 found to be again covered with the species on Oct. 5, 1895- 

 [Nuttall, 1865, 752). On Magnolia Fraseri, Nov. 1895. 



P. vaporaria Fr. 



On Prunus scroti7ia, Dec. 8, 1893 [Nuttall, 1295, 244). 



P. Tulipiferae Schw. 



On Liriodendron Tulipifera, April 13, 1893 [Nuttall, 893). 



P. xantha Fr. 



On Pinus Virginiana, March 21, 1893 [Nuttall, 913). 



