56 THE WEST VIRC.INE-V FLORA 



P. Smilacina (Peck) Sacc. 



On Smilax rotuiidifolia, Aug. 17, 1894. Sporules about 

 18 X 6 to 7.5 /x {Nnttall, 1660). 



APOSPHAERIA Berk. 



A. PEZizoiDES E. & E., Proc. Phila. Acad., 1894, 358. 



Type habitat: On decorticated trunks of Plataniis oc- 

 cidentalism Salix nigra falcata, Betula nigra, Fraxinus sp., 

 and Liquidainbar Styraciflua, on abrasions made by drift- 

 wood and ice. where it seems to grow exclusively and al- 

 ways below high-water mark, April, 1894 {Ntittall, discov. 

 1458, 432). 



Perithecia erumpent-superficial, seriate-aggregate, hemis- 

 pherical, about .75 mm. diameter, with a distinct papilli- 

 form ostiolum, at length collapsing and pezizoid or discoid. 

 Sporules elliptical or ovoid, 4 to 6 x 2.5 /x ends obtuse. 



DENDROPHOMA Sacc. 



D. Therryana Sacc. & Roum. 



On Platanus occidcntalis, April 19, 1894 {Nnttall, 1463). 



SPHAERONAEMA Fries. 



S. Physocarpi E. & E., Proc. Phila. Acad., 1894, 358. 



Type habitat : On dead stems Opulastcr opnlifolins, 

 May, 1894 (Nnttall, discov. 1504, 484). 



Perithecia gregarious, erumpent-superficial, hemispherical, 

 ISO fi diameter, with a straight, stout beak 90 to 115 /x long. 

 Sporules narrow-elliptical, hyaline, 2 to 3-nucleate, 7 to 9 

 X 2.5 fJ.. 

 S. iNFUSCANS E. & E. Field Mus. Bot., i : 109 (1896). 



Type habitat: On dead dry wood Jnglans cincrca., 

 Dec. 5, 1894 (Nnttall, discov. 1766, 661). 



Perithecia gregarious, erumpent-superficial, hemispherical, 

 brownish-black, about .25 mm. diameter, with a short cyl- 

 indrical (.33 mm.), shining-black, obtuse, perforated ostio- 

 lum. Sporules abundant, elliptical, continuous, hyaline 3 to 

 4 X 1.5 /x on basidia simple or branched below, about 12 /* 

 long and .5 /x thick at the base, narrowed above. 



The surface of the wood is blackened. 



S. Acerinum Peck. 



On Acer rnbrnni, June 12, 1894 (Nnttall, 1543). 



S. CORNEUM C. & E. 



On Onagra biennis, Jan. 21, 1895 (Nnttall, 1791, 682 in 

 part). 



