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 (Millspaugh}. On various dead trees, 

 Feb., 1893 (Nuttall, 834). 



P. HIRSUTUS Fr. 



On dead twig cultivated Pyrus Malus, Monongalia Co., near 

 Morgantown. On dead Betula lutea, and on log Liriodendron 

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

 lenta, Grant Co., near Bayard (Millspaugh}. On Fagus atropuni- 

 cea, Keeney's Creek, Oct. 20, 1893 (Nut tall, 1211). 



P. ABIETINUS Fr. 



On fallen Tsuga Canadensis, Grant Co., near Bayard (Mills- 

 paugh). On Pinus Virginiana, March 4, 1894 (Nuttall, 1420, 390)- 



MUCRONOPORUS E. & E. 



M. Everhartii E. & Gall. 



On Ulmus pubescens, Nov. 6, 1893 (Nuttall, 1598). 



M. Gilvus (Sz) E. & E. 



On Castanea dentata, July 20, 1894 (Nuttall, 1169, 558). 



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



On Juglans cinerea, Aug. 29, 1893 {Nuttall, 1183). 



PORIA Pers. 



P. vulgaris Fr. 



On various dead limbs, Feb. 2 and Nov. 20, 1893 {Nuttall, 

 833). 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 Hicoriat log. Effused, long and 

 narrow, perennial (Nuttall, 1268). 



P. toxnento-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 serotina, 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). 



