Dicotyledons. 



638 



5400 



Robinson, B. L. Two varieties of 

 Sistjmhi^ium oijiclnale in America. I.e. 7, 

 1905, (101-103j. 



A new Ranunculus \R. 



Allenii n. sp.] from nortli-easteru 

 America. I.e. (219-222). 



and Greenman, J. M. 



Revision of the genus Sahazia. Boston, 

 Mass., Proc. Amer. Acad. Arts Sci., 40, 

 1904, (3-6). 



Mexican and Central 



American species of Tr'txls. I.e. (6- 



M). 



]\rexican and Central 



American species of Hieraeium. I.e. 

 (14-24). 



Rosner, A. Heilmig der Begonien- 

 Krankheit. Mollers D. Gartnerztg, 

 Erfurt, 19, 1904, (195). 



Rogenhofer, E. Variatiousstatistische 

 Untersuchungen an Gentiana verna L. 

 und Gentiana tergestlna Beck. Wien, 

 Verb. ZoolBot. Ges., 55, 1905, (257). 



Rogers, W. M. Ruhus Newlouldii 

 Bab. J. Bot., London, 43, 1905, (364- 

 365). 



and Linton, E. F. Frencli 



and German views of British Ruhl. I.e. 

 (198-205). 



Rojas-Acosta, N. Sertum argentinum 

 (Enumeratio plantarum). Mans (le), 

 BuL Acad, internat. geog. bot., 1905, 



(78-84). 



Rose, J. N. Mexican and Central 

 American plants. Washington, D.C., 

 Smithsonian Inst., Nation. Mus., Cont. 

 Nation. Herb., 8, 1905, (i-vii + 281- 

 339 + ix, with pi., text-fig.). 



Five new species of Mexican 



plants [nn. spp. in Polianthes, Nolina, 

 Parnassia, Heuehcra and Dahlia']. 

 Washington, D.C., Smithsonian Inst., 

 Nation Mus., Proc, 29, 1905, (437- 

 439). 



Two new umbelliferous 



plants from the coastal plain of Georgia. 

 [Harperia nodosa n. gen. and sp. and 

 Zizia arenicola n.sp.] I.e. (1 1. + 441- 

 442, with 1 pi.). 



and House, H. D. Three 



Mexican violets. I.e. (443-444, with 

 pi.). 



Rosen dahl, C. 0. Die nordamerikani- 

 schen Saxifragiuae und ihre Verwandt- 

 schafts-Verhaltnisse in Beziehung zu 

 ihrer geographischen Verbreituug. Bot. 

 Jahrlx, Leipzig, 37, 1905, Beiblatt 

 No. 83, (1-87, m. 2 Taf.). 



A new species of Razou- 



moisltya. Minn. Bot. Stud., Minneajwlis, 

 Minn., (Ser. 3), Pt. 2, 1903, (271-273, 

 with pi.). 



Ross, H. Schiidigungen des Hasel- 

 strauches und deren Bekampfung. 

 Prakt. Bl. Pflanzenschutz, Stuttgart, 3, 

 1905, (49-53). 



Rothe, R. Magnolia stellata Max. 

 Gartenflora, Berlin, 52, 1903, (409-410). 



Rother, W. 0. Phyllokakteen- 

 Plauderei. Monatschr. Kakteenk., Neu- 

 damm, 15, 1905, (9-10, 27-28). 



Cereu-'i lainprocldorus Lem. 



I.e. (112-113). 



Echinocereen. I.e. (161). 



Eehinocereus Salmianus 



und E. Salm-DycManus. I.e. (175-176). 



und Voss, A. Caetus 



Gaertneri ein Blatt- oder Ketten-Kaktus ? 

 D. Gartenrat, Berlin, 2, 1904, (202). 



Rothmaler. Gelbsucht bei Ferkeln 

 nach Vieia tJi/io-sa-Fiitterung. 111. 

 landw. Ztg, Berlin, 22, 1902, (252). 



Rouy, G. Notices floristiques. Paris, 

 Bui. soc. bot., 52, 1905, (85-87). 



Un dernier mot sur la 



notation Ornitliopus exstipidatus Thore. 

 I.e. (190-191). 



Rudow. Schildlaus an Eedera Helix. 

 Insektenborse, Leipzig, 21, 1904, (332). 



Ruska, J. Zur Pflanzenteratologie. 

 iSeahiosa Columbaria.] Naturu. Schule, 

 Leipzig, 4, 1905, (419-423;. 



Russell, W. Principes actifs de la 

 garance. Rev. gen. bot., Paris, 17, 

 1905, (254-259). 



Rydberg, P. A. Rocky mountain 

 flora. New York, N.Y., Bull. Torrey 

 Bot. CI., 31, 1904, (555-575, 631-655) ; 

 [Compositae.] I.e. 32, 1905, (123-138). 



Astragalus and its segre- 

 gates as represented in Colorado. I.e. 

 32, 1905, (657-668). 



Sabransky, H. Veilchenflora Steier- 

 marks. Allg. bot. Zs., Karlsruhe, 11, 

 1905, (162-165). 



