﻿648 Index to American botanical literature 



Pilger, R. Plantae Uleanae novae vel minus cognitae. Notizbl. 

 Konigl. Bot. Gart. Berlin 6: 261-310. 30 Je 1915. 

 Contains contributions by Dammer (Palmae); Ule (Thuriniaceae, Loranthaceae, 

 Rafflesiaceae. Nymphaeaceae) ; Loesener (Musaceae, Marantaceae) ; Diels (Pro- 

 teaceae); Focke (^Rubus); Harms (Leguminosae). 



Plowman, A. B. Is the box elder a maple? A study of the comparative 



anatomy of Negundo. Bot. Gaz. 60: 169-192. pi. 3-10. 16 S 1915. 



Ramaley, F. The relative importance of diflferent species in a mountain 



grassland. Bot. Gaz. 60: I54-I57- H Au 1915. 

 Roddy, H. J. Concretions in streams formed by the agency of blue 

 green algae and related plants. Proc. Am. Philos. Soc. 54: 246-258. 

 /. I. 2. Au 1915. 

 Rose, J. N. Exploration in western South America. Jour. N. Y. Bot. 



Gard. 16: 172-174- Au 1915. 

 Roth, G. Nachtrag I zu Band I der aussereuropaischen Laubmoose von 

 1910-11. Hedwigia 53: 81-98. 15 Mr 1913; Nachtrag II zu Band 

 I der aussereuropaischen Laubmoose von 1910-11. Hedwigia 54: 

 267-274. 20 Mr 1914. 

 Rusby, H. H. Report upon the cultivation of drug and dye plants. 



Jour. N. Y. Bot. Gard. 16: 155-172. Au 1915- 

 Rydberg, P. A. Notes on Rosaceae— IX. Bull. Torrey Club 42: 

 1 17-160. 16 Mr 1915;— X. Bull. Torrey Club 42: 463-479- 22 S 

 1915- 

 Safford, W. E. An Aztec narcotic (Lophophora Williamsn). Jour. 



Heredity 6: 291-311./. i-ii. 25 Je 1915. 

 Saunders, C. F. Plant namesakes of presidents. Am. Bot. 21: 50. 



My 1915. 

 Scales, F. M. Some filamentous fungi tested for cellulose destroying 



power. Bot. Gaz. 60: 149-153. 14 Au 1915. 

 Scott, E. L. A study of pasture trees and shrubbery. Bull. Torrey 



Club 42: 451-461./. I-I3- 22 S 1915. 

 Spegazzini, C. Fungi nonnuUi senegalenses et canarienses. An. Mus. 

 Nac. Buenos Aires 26: 117-134- I9i5- 

 Describes fourteen new species. 

 Spegazzini, C. Laboulbeniali ritrovate nelle coUezioni di alcuni musei 

 italiani. An. Mus. Nac. Buenos Aires 26: 451-511./. 7-49. 1915. 

 Thirty-seven new species are described. 

 Splendore, A. Catalizzatori o stimolanti fecondativi e mutamenti in 



nicoziane. Boll. Tabac. Teen. Col. 14: 3-37. pi. 1-26. Ap 191 5. 

 Stewart, V. B. Some important leaf diseases of nursery stock. Cornell 

 Agr. Exp. Sta. Bull. 358: 169-226./. 66-94. Ap 1915. 



