Index to American botanical literature 281 



Pennell, F. W. Some additions to Dr. FusselFs list of Delaware 

 County plants. Proc. Delaware County Inst. Sci. 4 : 68-74. 25 

 Mr 1909. 



Purpus, J. A. Cereus Schenckii Purp. n. sp. Monats. Kakteenk. 19 : 

 . 38-41. 15 Mr 1909. 



Native in Mexico, 



Ramaley, F*, & Robbins, W. W. Studies in lake and streamside vege- 

 tation. Univ. Colorado Studies 6: 133-168 -f- i-iv. F 1909. 

 [lllus^] 



Robinson, B. L., & Fernald, M. L. Emendations of the seventh edi- 

 tion of Gray's manual — I. Rhodora 11 : 33-61. 6 Ap 1909. 



Robinson, W. J. Experiments on the effect of the soil of the Hem- 

 lock Grove of the New York Botanical Garden upon seedlings. Jour. 

 N. Y. Bot. Gard. 10 : 81-87. / 13. Ap 1909, 



Roland-Gosselin, R. Cactaceae novae. Bull. Soc. Bot. France 55 : 

 694-696. 6 F 1909. 



Rhipsalis himantoclada^ native in Costa Rica, and Cereus Dyborvskii^ native in 

 Brazil. 



Rolfe, R. A. New orchids : decade 33. Kew Bull, Misc. Inf. 1909 : 

 61-66. Mr 1909, 



Includes 4 new American species in Octomeria^ Cynoches^ Ornkhidium^ and Sobralia, 



Rose, J. N. Studies of Mexican and Central American plants — no. 6- 

 Contr. U. S. Nat. Herb. 12: i-ix -|- 259-302. pL 20-27 -\- f. 20-48. 

 12 Ap 1909. 



Includes the new genera Pelozia^ Pseudolopezia^ and JehHuy of the Lopezieae^ and 

 74 new species in Cycadahs^ Gnetales^ Liliaceae (2), and numerous families of 

 dicotyledons (70). 



Schaffner, J. H. The classification of plants — V. Ohio Nat. 9 : 489- 

 494. 7 Ap 1909. 



Schaffner, J. H. The reduction division in the microsporocytes of 

 Agave virginica, Bot. Gaz. 47 : 198-214. pL 12-14. 23 Mr 1909. 



Schulz, 0. E. Ex herbario Hassleriano : novitates paraguarienses — I. 

 VI. Erythroxylaceae, Repert. Nov. Spec. 6 : 352. i Mr 1909, 



Erythroxylum pachyneurum sp. nov. 



Seaver, F.J. The Hypocreales of North America — I. Mycologia i ; 

 41-76. //. 4, 5. Ap 1909. 



Includes Neciria Papilionacearum and Opkionedria cylindroihecia spp. nov, 



Shaw, C. H. Vegetation and altitude. Plant World 12 : 63-65. Mr 

 1909. 



Shear, C. L. The present treatment of monotypic genera of fungi. 

 Bull, Torrey Club 37: 147-151. 27 Mr 1909. 



