136 INDEX TO AMERICAN BOTANICAL LITERATURE 
Rydberg, P. A. Rosaceae (pars) N. Am. FI. 22: 389-480. 23 D 1913. 
Includes Agrimonia macrocarpa, A. Pringlei, eames -brevifolium, Sieversia 
mrcresthe, Geum Sno G. oa a perincisum, G. mexicanum, Cowania 
arpus macrourus, C. Douglasii, z= Lane G. ee Cae 
pects i pacciaheae C. hypoleucus, ian nov., and 19 new species in Rubus. 
Schaffner, J. H. The classification of plants, X. Ohio Nat. 14: 198- 
203. 18 N 1913; XI. Ohio Nat. 14: 211-214. 15 D 1913. 
Schaffner, J. H. The sprouting of the two seeds of a cocklebur. 
Olito. Nat. 14: 216, 2177. 15D. 1913. 
Schley, E.O. Chemical and physical changes in geotropic stimulation | 
and response. Bot. Gaz. 56: 480-489. f. 1-6. 18 D 1913. 
Sherff, E.E. Studies in the genus Bidens, 1. Bot. Gaz. 56: 490-495. 
18 D 1913. 
Bidens Deamii, B. parvulifolia, B. ramosissima, B. mexicana, and B. Britionit, 
spp. nov. 
Sherff, E. E. Vegetation of Skokie marsh. Illinois State Lab. Nat- 
Hist. Bull. 9: 575-614. pl. 86-96. Au 1913. 
Shinn, C. H. An economic study of Acacias. U. S. Dept. Agr. Bull. 
9: 1-38. pl. 1-17. § D 1913. 
' Skottsberg, C. Bemerkungen zu einigen von M. Gandoger neuerdings 
von den Falkland-Inseln beschriebenen Pflanzen. Bot. Jahrb. 
Beibl. 50: 13-17. 25 N 1913. 
Skottsberg, C. Bemerkungen zur Systematik der Myzodendron. Bot. 
Jahrb. 50: 384-391. f. 1, 2. 25 N 1913. 
Smith, C. O. Black pit of lemon. Phytopathology 3: 277-281. Pl. 
a4, OD 1013 
Bacterium citriputeale sp. nov. 
Spaulding, P. Notes on Cronartium Comptoniae, 11. Phytopathology 
3: 308-310. Di913.. 
Stewart, V. B. The importance of the tarnished plant bug in the 
dissemination of fire blight in nursery stock. Phytopathology 3: 
273-276. HF. 23. DD I9ts. 
Van Hook, J.M. [ndiana fungi—III. Proc. Indiana Acad. Sci. 1912+ 
99-101. 1913. 
Vaupel, F. Rhipsalis rosea Lagerh. Monats. Kakteenk. 23: 156, 157- 
15 O 1913. 
Vaupel, F. Vier von Ule in Nordbrasilien und Peru gesammelte 
Kakteen. Monats. Kakteenk. 23: 164-167. 15 N 1913. [Illust.] 
ee 
Visher, S. S. Additions to the flora of South Dakota—II. Muhlen-— 
bergia 9: 69-77. 9 D 1913. 
