142 
journal of Mycology 
[Vol. 9 
Pleospora sepulta Clements n. sp., ad ramos ignotos vetustos 
decorticatosque. Bull. Torr. Bot. Club, 30:85. Feb. 1903. 
Plicaria chlorophysa Clements n. sp., ad lignum udum vetus- 
tumque; ad fimum. Bull. Torr. Bot. Club, 30:91. Feb. 
1903. 
Podaxine^, Key to the Genera. [C. G. Lloyd.] Myc. Notes 
(240), No. 14:137. March 1903. 
Polygonom pennsylvanicum, host to Physalospora obtusa 
(Schw.) Cke. Jour. Mycol. 8:68. June 1902. 
P olyporacete of North America. II. The Genus Pyropolypo- 
rus. William Alphonso Murrill. Bull. Torr. Bot. Club, 
30:109. Feb. 1903. 
Polyporus conchatus Fr., syn. of Pyropolyporus conchatus, q. v. 
Populus deltoides, host to Cytosporella macrospora Peck n. sp. 
Bull. Torr. Bot. Club, 30:99. Feb. 1903. 
Polyporus fraxinophilus, A disease of the White Ash caused by. 
Hermann von Schrenk. U. S. Dept. Agr. Bureau PI. In¬ 
dustry, Bull. 32:1-20. PI. I-V. 28 Feb. 1903. 
Polyporus fulvus Fr., syn. of Pyropolyporus fulvus, q. v. 
Polyporus igniarius Fr., syn. of Pyropolyporus igniarius, q. v. 
Polyporus juniperinus Schrenk, syn. of Pyropolyporus juniperi- 
nus, q. v. 
Polyporus linteus, B. & C., syn. of Pyropolyporus linteus, q. v. 
Polyporus ribis Fr., syn. of Pyropolyporus ribis, q. v. 
Polyporus senex, syn. of Pyropolyporus senex, q. v. 
Problems in the Study of Plant Rusts. [Presidential Address. 
Botanical Society of America. J. C. Arthur.] Bull. Torr. 
Bot. Club, 30:1-18. Jan. 1903. 
P [seudomonas] Steward, Completed Proof that, is the cause of 
the Sweet Corn Disease of Long Island. [Abstract.] Er¬ 
win F. Smith. Science, N. S. 17:457. 20 March, 1903. 
Pseudotsuga douglasii, host to Peridermium holwayi Syd. n. sp 
Ann. Mycolog. 1:20. Jan. 1903. 
Psidium, old stump, host to Polyporus jamaicensis Murrill n. sp. 
Bull. Torr. Bot. Club, 30:120. Feb. 1903. 
Psilothecium Clements n. gen. [Ascomycetes. Patinellse af- 
finis.] Bull. Torr. Bot. Club, 30:85. Feb. 1903. 
Psilothecium incurvum Clements n. sp., al lignum udum decor- 
ticatumque Salicis chlorophylls. Bull. Torr. Bot. Club, 30:86. 
Feb. 1903. 
