42 fournal of Mycology [Vol. 9 
Physalospora vagans E. & E. n. sp., on dead, bleached canes of 
Rubus strigosus. Jour. Mycol. 8 : 6 y. June 1902. 
Physcia, see Lichens — Physcia. 
Phytolacca decandra, host to Phoma apocrypta E. & E. n. sp. 
Jour. Mycol. 8:62. June 1902. 
Pierce, Newton B. Pear Blight in California [especially the 
Winter Blight]. Science, N. S. 16:193-4. 1 Aug. 1902. 
Pine woods, matrix for Clitocybe subconcava Peck n. sp. N. 
Y. State Mus. Bull. 54:949. Nov. 1902. 
Pinus contortus, new host to Cryptoporus volvatus (Peck) Shear. 
Bull. Torr. Bot. Club, 29:450. July 1902. 
Pinus palustris, host to Hysterium compressum E. & E. n. sp. 
Jour. Mycol. 8:69. June 1902. 
Pinus virginiana, new host to Cryptoporus volvatus (Peck) 
Shear. Bull. Torr. Bot. Club, 29:450. July 1902. 
Pinus virginiana, scales of cones, host to Illosporium concolorurn 
E. & E. n. sp. Bull. Torr. Bot. Club, 29:452. July 1902. 
Piricularia euphorbiae Atkinson, syn of Passalora fasciculata 
q. v. 
Pirus malus, host to Phyllosticta clypeata E. & E. n. sp. Jour. 
Mycol. 8:15. May 1902. 
Plant Diseases, Effect of Acetylene Gaslight on Plant Growth, 
and Plant Environment. [Abstract.] Frank William Rane. 
Science, N. S. 16:137. 25 July 1902. 
Plant Disease, Plant Environment and. [Abstract.] F. W. 
Rane. Science, N. S. 16:137. 25 July 1902. 
Plant Rusts (some Additions to the Flora of Indiana). Wil¬ 
liam Stuart. Proc. Ind. Acad. Sci. 1901:283~4. 1902. 
Plant Pathology, see Pathology, Plant .... 
Plasmopara vincetoxici E. & E. n. sp., on leaves of Vincetoxi- 
cum. Jour. Mycol. 8:70. June 1902. 
Platygrapha plurilocularis A. Zahlbr. n. sp., ad corticem Rhoi- 
dis integrifoliae. Beihefte z. Bot. Centralbl. 13:156. 1902. 
Plectascineae, see Key to genera of. . . . 
Plectothrix Shear gen. nov. [related to Monosporium.] Bull. 
Torr. Bot. Club, 29:457. July 1902. 
Plectothrix globosa Shear n. sp., on leaves of Vaccinium mac- 
rocarpon kept in a moist chamber. Bull. Torr. Bot. Club, 
29 - 457 - July ^02. 
