Nov. 1906 ] Index to North American Mycology 263 
Peronospora cubensis B. & C. syn of Peronoplasmopara cu~ 
bensis q. v. 
Peronospora parasitica on Cauliflower, On the Occurrence of. 
Hermann von Schrenk. An. Rep. Mo. Bot. Gar. 16:121-4. 
PL 22-4. 1905. 
Persea gratissima, Aguacate, host of Hendersonia mexicana 
Sacc. n. sp. [Mexico.] Jour. Mycol. 12:51. Mar. 1906. 
Persica vulgaris, host to Plaplosporella missouriensis Babak n. 
sp. Jour. Mycol. 12:54. Mar. 1906. 
Peziza nyssaegena Ellis, syn. of Sclerotinia nysssaegena q. v. 
Phleospora hanseni Bubak 11. sp., auf lebenden Blattern von 
Quercus morehus. Jour. Mycol. 12:54. Mar. 1906. 
Phlox, dead stems, host to Pleospora magnifica Peck n. sp., 
Bull. Torr. Bot. Club, 33:221. Apr. 1906. 
Phlox drummondii, host to Ophiobolus sceliscophorus Fairman 
n. sp. Proc. Rochester Acad. Sci. 4:215. March 1906. 
Pholiota cubensis Earle n. sp. [Cuba.] Informe An. Estac. 
Agronom. Cuba, 1:242. 1 June 1906. 
Pholiotinia Fayod, Pholiota (Hygrophanae) Sacc. [Earle.] 
Informe An. Estac. Agronom. Cuba, 1:24i. 1 June 1906. 
Pholiotinia musae Earle n. sp. [Cuba.] Informe An. Estac. 
Agronom. Cuba, 1:24i. 1 June 1906. 
Phoma lophanthi Bubak n. sp. [Septoria lophanthi Ellis ined., 
not Septoria lophanthi Winter], auf toten Stengeln von Lo- 
phanthus nepetoides. Jour. Mycol. 12:53. Mar. 1906. 
Phomopsis majuscula Sacc. n. sp., in ramis emortius Tecomae 
radicantis. Ann. M)^colog. 4:275. 5 June 1906. 
Phomopsis missouriensis Bubak n. sp., auf toten Stengeln von 
Asclepias verticillata. Jour. Mycol. 12:53. Mar. 1906. 
Phyllosticta consors Sacc. n. sp., in maculis ochraceo-brunneis 
Phleosporae ad folia Mori albae cultae [Mexico]. Jour. 
Mycol. 12:51. Mar. 1906. 
Phyllosticta convexula Bubak n. sp., auf Blattern von Carya 
tomentosa. Jour. Mycol. 12:52. Mar. 1906. 
Phyllosticta potentillae Desm., syn. of Marssonina potentillae 
q. v. 
Phyllotus hygrophanus Earle n. sp. [Cuba.] Informe An. 
Estac. Cen. Agronom. Cuba, 1:2?3. 1 June 1906. 
Phyllotus imbricatus Earle n. sp. [Cuba.] Informe An. Estac. 
Cen. Agronom. Cuba, 1:233. 1 June 1906. 
