Feb. 1903 ] Index to North American Mycology 
67 
Ustilago rotundata Arth., syn. of Tilletia maclagani q. v. . . 
Ustilago setarise Niessel?, syn. of Sphacelotheca pamparum q. v. 
Ustilago sorghi Pass., syn. of Sphacelotheca sorghi q. v. . . 
Ustilago taubertiana Henn., syn. of Cintractia taubertiana q. v. 
Ustilago tillandsise Patters, n. sp., hosts, Tillandsia leiboldiana, 
n. sp. Jour. Mycol. 8:135. Oct. 1902. 
Ustilago tricuspidis Ell. & Gall. n. sp., host, Triodia cuprea 
(Tricuspis seslerioides). Jour. Mycol. 8:137. Oct. 1902. 
Ustilago violacea var. major Clint, n. var., host, Silene watsoni. 
Jour. Mycol. 8:139. Oct. 1902. 
Vaccinium macrocarpon, host to Pestalozzia quepini vaccinii 
Shear subsp. nov. Bull. Torr. Bot. Club, 29:456. July 
1902. 
Variations in the appendages, see Podosphaera oxycanthae. 
Vaughan, V. C. Nature of the Specific Bacterial Toxins. 
Science, N. S. 16:312-4. 22 Aug. 1902. 
Vegetable Mold, matrix for Thelephora exigua Peck n. sp. N. 
Y. State Mus. Bull. 54:953. Nov. 1902. 
Vegetable Parasites [as Causes Modifying the Characteristics 
of Vegetable Powders]. Powdered Vegetable Drugs, 40-4. 
1902. 
Vegetable Pathology, see Pathology , Vegetable. . . . 
Venturia inaequalis (Cke.) Wint. [Nomenclature of Apple 
Scab, G. P. Clinton.] Ill. Agr. Exp. Sta. Bull. 67:123. Dec. 
1901. 
Venturia nebulosa E. & E. n. sp., on dead leaves of Eragrostis 
sp. Jour. Mycol. 8:66. June 1902. 
Venturia rubicola E. & E. n. sp., on dead canes of Rubus 
occidentalis. Jour. Mycol. 8:15. May 1902. 
Verbesina encelioides Gray (Ximenesia encelioides Cav.), host 
to Puccinia ximenesise Long n. sp. Bull. Torr. Bot. Club, 
29:115. Feb. 1902. 
Verbesina virginica, host to Stachybotryella repens E. & B. n. 
sp. Jour. Mycol. 8:177. Dec. 1902. 
Verbesina trilobata, host to Puccinia affinis Syd. n. sp. Monogr. 
Uredin. 1 :i74. 30 June 1902. 
Verbesina virginica, host to Puccinia similis Long n. sp. Bull. 
Torr. Bot. Club, 29:114. Feb. 1902. 
