418 Index to American botanical literature 



%' 



Rose, J. N. A species of Pereskia from Guatemala. Contr. U. S. 



Nat. Herb. I2 : 399. pL S^~54' ^^ ^Y ^909. 

 Rose, J. N. Conzaifia^ a new genus of Caesalpiniaceae. Contr. U. S. 



Nat, Herb. 12 : 407, 408, //. 5p, 12 My 1909. 



L\ ai'barea sp. nov. from Mexico. 



Rose, J, N. Echinocereiis Bai/eyt\ a new cactus from Oklahoma. 

 Contr. U. S. Nat. Herb. 12 : 403. //. ^6, 5J. 12 My 1909. 



Rose, J. N. New species oi Opuntia from Arizona. Contr. U. S. 

 Nat. Herb. I2 : 401, 402. //, 55. 12 My 1909. 



O, Blakeana and O. 1 ouffteyi spp. nov. 



Rose, J. N. Nopalea lufea, a new cactus from Guatemala. Contr. U, 

 S. Nat. Herb. 12 : 405. //. j8. 12 My 1909. 



Rose, J. N. Rediscovery of Cej-etis nndiflorus, Contr, U. S. Nat. 

 Herb. 12: 397, 398. //. 4Qsr. 12 My 1909. 



Rose, J. N. Rediscovery o{ Echeveria carnicolor. Contr. U. S. Nat. 

 Herb. 12: 393. //. 46. 12 My 1909. 



Rose, J. N. Three new species of Cnissulaceae from Guatemala. 

 Contr. U. S. Nat. Herb. 12: 395, 396. pi. ^7, 4.8. 12 My 1909. 



Echeveria guatemalensis^ E. Maxoni^ and Villadia guatemahnsis. 



Rose, J. N. Two new species of Acacia of the series Filicinae. Contr. 

 U. S. Nat. Herb. 12: 409. 12 My 1909. 



A. Lemmoni from Mexico and A. suffrutescens from Arizona. 



Rouy, G. *' Conspectus" des tribus et des genres de la famille des 

 Scrofulariacees, Rev. Gen. Bot. 21 : 194-207. 12 My 1909. 



Rydberg, P. A. Elodeaceae. N. Am. Fl. 17: 67-71. 30 Je 1909. 



Rydberg, P. A. Hydrocharitaceae. N. Am. Fl. 17 : 73, 74. 30 Je 



1909. 



Rydberg, P. A. Sparganiaceae. N. Am. FL 17: 5-10. 30 Je 1909. 



S. Wilhamsii and S. chlorocarptim described as new. 



Sauer, L. W. Nuclear divisions in the pollen mother-cells of Conval- 

 laria majalis L. Ohio Nat. 9 : 497-505. pL 24, 25. 4 My 1909. 



Saxton, W* T. Parthenogenesis in Phius Pinaster, Bot. Gaz. 47: 

 406-409./. /-/, 21 My 1909, 



Schaffner, J. H, Trees of Ohio and surrounding territory. Proc. 

 Ohio Acad. Sci. 5: 73-191. 30 Ap 1909. 



Special paper no. 15, 



Schreiner, 0., & Reed, H. S, Studies on the oxidizing power of roots. 

 Bot. Gaz. 47: 355-388. 21 My 1909. 



Schroder, B. Phytoplankton von Westindien, Ber. Deuts. Bot. 

 Gesells. 28: 210-214. /. r. 27 My 1909. 



