io8 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



Phyllosticta fragaricola Desm. has similar sporules, but the 

 spots are much smaller, with a white center. The basidia also 

 indicate Phoma and not Phyllosticta. 



P. ilicicola (C. & E.) Sacc. 



On leaves of Ilex opaca, June 18, 1893 (Nuttall, 1017). 



P. Spiraeas Desm? 



On Opulaster opulifolius, May 13, 1894. Sporules 10 to 13 x 2// 

 (Nuttall, 1508, 489). 



P. herbarum West. 



On Onagra biennis, March 18, 1894 (Nuttall, 1435, 406). 



P. Phytolaccae B. & C. 



On stems Phytolacca decandra, July 31, 1893 (Nuttall, 1140). 



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



TYPE HABITAT: On old peduncles Magnolia Fraseri, Jan., 1894 

 (Nuttall, discov. 1339, 297). 



Perithecia scattered, flattish pustuliform, .5 to. 75 mm. diameter, 

 with a prominent papilliform ostiolum. Sporules fusoid-oblong, 

 hyaline, 2 to 3 nucleate, 7 to n x 2 to 2.5 ;j. ends acute. 



Differs from Stagonospora pedunculi in its larger, flatter peri- 

 thecia and fusoid-oblong (not cylindrical), rather shorter sporules. 



P. uvicola B. & C. 



On Vitis cult. (Concord), July 4, 1893 (Nuttall, 1108, 94). 



P. nyssaecarpa Cooke. 



On dead limbs Nyssa aquatica, April 15, 1895 (Nuttall, 1809, 

 696). Sporules 10 x 3 ,u. 



P. samararum Desm. 



On samaras Acer Pennsylvanicum, Feb. 2, 1894 (Nuttall, 1363, 

 321)-. 



P. smilacina (Peck) Sacc. 



On Smilax rotundifolia, Aug. 17, 1894. Sporules about 18 x 6 

 to 7.5 fj. (Nuttall, 1660). 



APOSPH^RIA Berk. 



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



TYPE HABITAT: On decorticated trunks of Platanus occidentalis, 

 Salix nigra falcata, Betula nigra, fraxinus sp., and Liquidambar 

 Styraciflua, on abrasions made by driftwood and ice, where it 

 seems to grow exclusively and always below high-water mark, 

 April, 1 894 (Nuttall,, discov. 1458, 432). 



Perithecia erumpent-superficial, seriate-aggregate, hemispheri- 

 cal, about .75 mm. diameter, with a distinct papilliform ostiolum, 

 at length collapsing and pezizoid or discoid. Sporules elliptical 

 or ovoid, 4 to 6 x 2.5 ,a ends obtuse. 



