INDEX TO RECENT LITERATURE 367 
Osterhout, G.E. A Hybrid Rudbeckia. Plant World, 6: 109. My 
1903. 
Pierce, N. B. Pear Blight in California. Science, II. 16: 193, 194. * 
1 Au 1902. 
Ramaley, F. The Cotyledons and Leaves of certain Papilionaceae. 
Univ. Colo. Stud. 1: 239-243. ~/7. Ap 1903. 
Ramaley, F. Remarks on the Distribution of Plants in Colorado East 
of the Divide. Postelsia, 1901: 19-53. A/. g-9. 1902. 
Renauld, F. & Cardot, J. Note sur le genre Zaxithelium R. Spruce. 
' Rev. Bryol. 28: 1rog-112. got. 
Robinson, C. B. Early Intervale Flora of eastern Nova Scotia. Proc. 
& Trans. Nova Scotian Inst. Sci. 10: 502-506. 2 Mr 1903. 
Rolfs, F. M. RAzzoctonia and the Potato. Science, II. 14: 899. 6 
D igor. 
Rydberg, P. A. Some Generic Segregations. Bull. Torrey Club, 
30: 271-281. Al. 77, rg. 16 My 1903. 
Divides Zygadenus into three genera, including Zoxtcoscordion gen. nov.; Rubus 
into three, Rudacer gen. nov., Oreobatus gen. nov. and Rubus; Mentzelia into four, 
including Bicuspidaria (S. Wats.) gen. nov.; and Synthyris into two, Synthyris and 
Besseya gen. nov. 
Sargent, F. L. Plants that Keep a Body- — Plant World, 6: 
103-105. My 1903. 
Schrenk, H. von & Spaulding, P. The Bitter Rot Disease of Apples. 
Science, II. 16: 669, 670. 24 O 1902. 
Selby, A.D. The Future of Vegetable Pathology. Science, II. 15: 
736-740. 9 My 1902. 
Shear,C.L. The Starting Point for Generic Nomenclature in Botany. 
Science, II. 16: 1035, 1036. 26 D 1902. 
Sheldon, E. P. New Species from the Pacific Coast.—I. Bull. 
Torrey Club, 30: 308-311. 16 My 1903. 
New species in Cheiranthus, Nemophila, Aster (2), Artemisia and Agoseris. 
Sheldon, J. L. Preliminary Studies on the Rusts of the Asparagus 
and the Carnation: Parasitism of Daruca. Science, Il. 16: 235- 
237. 8 Au 1902. 
Smith, E. F. Plant Pathology: A Retrospect and a Prospect. Sci- 
ence, II. 15: 601-612. 18 Ap Igo2. 
Spalding, V.M. ‘he Rise and Progress of Ecology. Science, II. 
17: 201-210. 6 F 1903. 
