564 INDEX TO AMERICAN BOTANICAL LITERATURE 
Risien, E. E. Pollinating the pecan. Jour. Heredity 8: 384. f. 18. 
Au 1917. 
Roberts, J. W. Apple blotch and its control. U.S. Dept. Agr. Bull. 
534: I-11. pl. 1,2 + 7-3. 28 J 1917. 
Phyllosticta solitaria. 
Rolfe, R. A. Cattleya Mossiae. Orchid Rev. 25: 105, 106. f. 14. My 
1917 
Native of Venezuela. 
Rolfe, R. A. Cypripedium caudatum. Orchid Rev. 25: 130-132. 
Je 1917. 
Native of Peru. 
Rolfe, R. A. Hexadesmia crurigera. Orchid Rev. 25: 128. f. 16. Je 
1917. 
Native of Central Amer 
Rolfe,R.A. Miltonia Roeshii. Orchid Rev. 25: 129, 130. f. 17. Je 1917. 
Native of Colombia. 
Rolfs, F. M. Angular leaf-spot of cotton. S. Carolina Agr. Exp. Sta. 
Bull. 184: 5-30. pl. r-19._ D 1915. 
Bacterium malvacearum 
Rorer, J.B. A lua of immortel trees. Bull. Dept. Agr. Trinidad 
and Tobago 14: 128, 129. 12 Au 1915. 
Erythrina velutina affected. 
Rorer, J. B. Citrus canker. Bull. Dept. Agr. Trinidad and Tobago 
14:130,131. 12 Au1gt5. 
Pseudomonas citri. 
Rorer, J. B. Cocoanut bud-rot. Bull. Dept. Agr. Trinidad and To- 
bago 14: 129, 130. 12 Au 1915. : 
Rorer, J.B. Plant diseases and pests. The anthracnose of the mango. 
Bull. Dept Agr. Trinidad and Tobago 14:-164-171. pl. rz. 5 O 1915. 
Gloeosporium mangiferae. 
Rorer, J. B. Plant diseases and pests. The pink disease of cacao. 
Bull. Dept. Agr. EAs send Bee Tobago 14: 1-4. f. 1, 2. 1916. 
Corticium salmonicolor. Rep 
Sampson, A. W. Siciica as a factor in range management. Jour. 
Forest. 15: 593-596. My 1917. 
Schaffner, J. H. The grasses of Ohio. Ohio Biol. Surv. Bull. Q: 256- 
329. My 1917. 
Seward, A.C. Ruth Holden (1890-1917). New Phytol. 16: 154-156. 
28 Je 1917. 
Shamel, A. D. A bud variation of Pittosporum. Jour. Heredity 8: 
357-358. f. rz. Au 1917. 
Shamel, A. D. Variation in artichokes Jour. Heredity 8: 306-309. 
J. 0, 10. Fl. 1047, 
