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 i8, 1893 [Nut tall, 1017). 



P. Spiraese Desm? 



On Opulastcr opulifoliiis, 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, Jul}' 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 11 x 2 to 2.5 ,a 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 (N'uttall, 1108, 94). 



P. nysssecarpa Cooke. 



On dead limbs N^yssa aquatica, April 15, 1895 {N'uttall, 1809, 

 6g6). Sporules 10 x 3 ;/. 



P. samararum Desm. 



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

 321)- 



P. amilacina (Peck) Sacc. 



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

 to 7.5 fj. {Nuttall, 1660). 



APOSPHiERIA Berk. 



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



Type habitat: On decorticated trunks of Plat anus occidentalis, 

 Salix nigra falcata, Betula tiigra, 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, 1894 {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. 



