INDEX TO AMERICAN BOTANICAL LITERATURE 693 
Gates, F.C. The vegetation of the region in the vicinity of Douglas 
Lake, Cheboygan County, Michigan, 1911. Ann. Rep. Michigan 
Acad. Sci. 14: 46-106. pl. 5-21. 1912. 
Gilbert, E. M. Biologic forms of black knot. Phytopathology 3: 
246, 247. Au 1913. 
Gilbert, W. W. Cotton anthracnose and how to control it. U. S. 
Dept. Agr. Farm Bull. 555: 1-8. f. 1-8. 7 O 1913. 
Gile, P. L. Relacién entre los terrenos calcA4reos y la clorosis de la 
pifia. Puerto Rico Estac. Exp. Agr. Bull. 11: 7-53. pl. 2, 2. 24 
FL-29%3. 
An English edition of this was published 7 N I9II. 
Goddard, H. N. Can fungi living in agricultural soil assimilate free 
nitrogen? Bot. Gaz. 56: 249-305. f. 1-18. 15 O 1913. 
Griffiths, D. Einige neue Opuntioideen. Monats. Kakteenk. 23: 
130-140. 15S 1913. [Illust.] 
Includes seven new species in Opuntia and one in Nopalea. (Translated from 
the English by F. Vaupel.) 
Hackel, E. Gramineae novae—X. Repert. Sp. Nov. 12: 385-387. 
25 S 1613. 
Includes Ichnanthus Damazianus sp. nov., from Brazil. 
Harper, R. M. Five hundred miles through the Appalachian Valley. 
Torreya 13: 241-245. 14 O 1913. 
Harter, L. L. Foot rot, a new disease of the sweet potato. Phyto- 
pathology 3: 243-245. f. r, 2. Au 1913. 
Plenodomus destruens sp. nov. on stems of Ipomoea Batatas. 
Hartley, C. Bark rusts of Juniperus virginiana. Phytopathology 3: 
249. Au 1913. 
Hartley,C. Twig canker on black birch. Phytopathology 3: 248-249. 
Au 1913. 
Hassler, E. Anacardiaceae. In Ex herbario Hassleriano:. Novitates 
paraguarienses. XIX. Repert. Sp. Nov. 12: 373,374- 15S 1913. 
Hassler, E. Compositae—II. In Ex herbario Hassleriano: Novitates 
paraguaiienses. XIX. Repert. Sp. Nov. 12: 367-371. 1 S 1913. 
Hassler, E. Leguminosae. VII. In Ex herbario Hassleriano: Novi- 
tates pataguarienses. XIX. Repert. Sp. Nov. 12: 371-373. 1 $ 
1913. : 
Hassler, E. Novitates argentinae. I. Repert. Sp. Nov. 12: 201, 202. 
30 My 1913; II. Repert. Sp. Nov. 12: 365-367. 1 S 1913. 
