JAN. 1896. FLORA OF W. VIRGINIA MILLSPAUGH & NUTTALL. 107 



P. negundinicola ramicola E. & E., Proc. Phila. Acad., 1894, 357- 

 TYPE HABITAT: On dead twigs Acer Negundo, April, 1894 (Nutt- 

 all, discov. 1483,' 465, 466?). 



Perithecia evenly but not thickly scattered, globose, small, .25 

 to .33 mm. diameter, covered by the slightly ruptured epidermis, 

 but distinctly prominent. Sporules oblong, elliptical, or ovate, 

 hyaline, with a single large nucleus, 10 to 13 x 4 to 5.5 //. 



Differs from the typical form, on the dead peduncles, in its 

 broader sporules, the former being but 2.5 to 3 ,. 



P. Pennsylvanica E. & E., Proc. Phila. Acad., 1894, 357. 



TYPE HABITAT: On dead limbs Acer Pennsylvanicum, Feb. 2, 

 1894 (Nuttall, discov. 1361, 318). 



Perithecia numerous, evenly scattered, subepidermal, .33 to .5 

 mm. diameter, whitish inside, raising the epidermis into minute 

 pustules, but scarcely rupturing it. Sporules subglobose, 6 to 

 7.5 //. diameter, nearly hyaline. 



P. Asclepiadea E. & E., sp. nov. 



TYPE HABITAT: On dead stems of Asclepias Syriaca, Oct. 10, 

 1894 (Nuttall, discov. 1717, 604). 



Perithecia thickly but evenly scattered, subelliptical, no to 

 1 20 fj. in the longer diameter, subcuticular, covered by the 

 blackened epidermis, which is raised into minute pustules but 

 scarcely ruptured. Sporules oblong-elliptical, 2-nucleate, hya- 

 line, 5 to 6 x 2 to 2.5 /JL. On curved (almost hooked) basidia 12 

 to 15 <>. long. 



Differs from the next form which occurs with it on the same 

 stems, in its larger perithecia and sporules and its curved basidia. 



P. - - sp. 



On dead stems Asclepias Syriaca, Oct. 10, 1894 (Nuttall). 



P. melaleuca B. & C. 



On petioles Aralia spinosa, April 25, 1895 (Nuttall, 1810). 



P. leucostoma L6v. 



On Opulaster ppulifolius, May 13, 1894. Sporules 2.5 to 4 x i /j. 

 (Nut tall, 1506, 487). 



P. mixta B. & C. 



On fire-killed Liriodendron Tulipifera, Oct. 16, 1894. Sporules 

 appendiculate at each end, 2-nucleate, 7 to 10 x 2 to 3 /./., oblong 

 fusoid; the accompanying filiform process hooked at the apex, 

 20 x .75 to 1.5 ;j. (Nut tall, 1709). 



P. scabra Sacc. 



On Platanus occidentalis, March 30, 1894 (Nuttall, 1459, 434). 



P. obscurans E. & E., Proc. Phila. Acad., 1894, 357- 



TYPE HABITAT: On leaves of Fragaria cult., July 8, 1894 (Nutt- 

 all, discov. 1600, 554). 



Spots 5 to 8 mm. diameter, with a ferruginous center and broad 

 purple border, paler below. Perithecia few, scattered, con vex - 

 prominent. Sporules oblong-elliptical, hyaline 2-nucleate, 4.5 

 to 5.5 x 1.5 to 2 ;j.. Basidia simple, lanceolate-fusoid, 8 to 12 x 

 1.5 //.. 



