Feb. 1903 ] Index to North American Mycology 
39 
Passalora helleri (Earle) Earle n. n. [Cercosporidium helleri 
Earle.] Torreya, 2:159-160. October 1902. 
Patellaria hamamelidis Peck, syn. of Dermatella hamamelidis 
q. v. 
Patellaria tetraspora Massee & Morgan n. sp., on dead wood 
of Juglans cinerea. Jour. Mycol. 8:180. Dec. 1902. 
Pathologist, Report of the State. J. B. S. Norton. Rep. 4th. 
An. Session Md. State Hort. Soc. 1901 127-32. 
Pathology, Plant: A Retrospect and Prospect. Erwin F. 
Smith. Science, N. S. 15:601-612. 18 April 1902. 
Pathology, Vegetable, On the Teaching of. Hermann von 
Schrenk. Bull. Torr. Bot. Club, 29:57-65. Feb. 1902. 
Pathology, Vegetable, The Future of. Augustine D. Selby. 
Science, N. S. 15:736-740. 9 May 1902. An. Rep. Ohio 
Acad. Sci. 1901, 10:24-32. 1902. 
Patterson, Flora W. A Collection of Economic and other 
Fungi prepared for distribution. U. S. Dept. Agr. Bureau 
of Plant Industry, Bulletin 8:1-31. 3 Feb. 1902. 
Peach Rot. J. B. S. Norton. Md. Agr. Exp. Sta. Cir. Bull. 
39:1-3. March 1902. 
Pear Blight in California [especially the Winter Blight.] New¬ 
ton B. Pierce. Science, N. S. 16:193-4. 1 Aug. 1902. 
Peck, Charles H. New Species of Fungi. Bull. Torr. Bot. 
Club, 29:69-74. Feb. 1902. 
Peck, Charles H. Report of the State Botanist 1901. N. Y. 
State Mus. Bull. 54:931-984. pi. K — L, 77-81. Nov. 1902. 
Pelargonium zonale, host to Macrophoma subconica E. & E. 
Jour. Mycol. 8:63. June 1902. 
Penicillium digitatum, see Rot, Orange and Lemon. . . . 
Pentstemon, dead stems, host to Gloniella pentstemonis Earle 
n. sp. Bull. N. Y. Bot. Garden, 2:(346). 25 April 1902. 
Pentstemon gracilis, host to Septoria pentstemonicola E. & E. 
n. sp. Jour. Mycol. 8:13. May 1902. 
Periconia, A Synopsis of the North American Species. Bull. 
N. Y. Bot. Garden, 2 :(33i)-(337). 25 April 1902. 
Periconia commonsii Earle n. sp., on decorticated area on dead 
limb of Morus. Bull. N. Y. Bot. Garden, 21(333). 25 Apr. 
1902. 
Periconia langloisii Earle n. sp., on dead stems of Andropogon. 
Bull. N. Y. Bot. Garden, 2 *.(335). 25 Apr. 1902. 
