462 INDEX TO RECENT LITERATURE 
Sargent, C.S. Recently Recognized Species of Crasacgus in Eastern 
Canada and New England, —III. Rhodora, 5: 137-153. 3 My 
1903 ;—IV. Rhodora, 5: 159-168. 6 Je 1903. 
Includes descriptions of 19 new species. 
Schenck, H. Tropische Nutzpflanzen. Vegetationsbilder, 1: p/. 13- 
fae 1903. 
a H. Vegetationsbilder aus Siidbrasilien. Vegetationsbilder, 
: pl. 1-6. 1903. 
cia A. Outline of the History of Leguminous Root Nodules 
and Rhizobia with Titles of Literature concerning the Fixation of 
Free Nitrogen by Plants. —III. Minn. Bot. Stud. 3: 133-139- 
3 Ji 1903. 
Schrader, H. F. Observations on A/aria nana sp. nov. Minn. Bot. 
Stud. 3: 157-165. p/. 27-26. 3 Jl 1903. 
Skinner, S.A. Observations on the Tide Pool Vegetation of Port 
Renfrew. Minn. Bot. Stud. 3: 145-155. 3 Jl 1903. 
Smith, J.D. Enumeratio Plantarum Guatemalensium, necnon Salva- 
dorensium, Hondurensium, Nicaraguensium, Costaricensium, 5: !~ 
r11. Oquawka, 1903. 
Smith, J.D. Enumeratio Plantarum Guatemalensium, secre Salva- 
dorensium, Hondurensium, Nicaraguensium, Costaricensium, 6: 
87... Oquawka, 1903. 
Stevens, F. L. & Stevens, A. L. Mitosis of the Primary Nucleus in 
Syachytrium decipiens. Bot. Gaz.35: 405-415. pl. 16, 177- 2? Je 
1903. 
Ternetz, C. Morphologie und Anatomie der Azore/la Selago Hook. fil. 
Bot. Zeitung, 60': 1-20. p/Z. r+ f. 1-8. 715 Ja 1902. 
True, R. H. & Gies, Ww. J. On the Physiological Action of some of 
the Heavy Metals in Mixed Solutions. Bull. Torrey Club, 30: 39° 
402. 10 Jl 1903. 
Underwood, L. M. Account of Explorations in Jamaica. Jour. N. Y. 
Bot. Gard. 4: 1og—119. f/. Is +f. 14, 15. Jl1903- 
Wheeler, W. A. The Umbellales of Minnesota. Minn. Bot. Stud. 3: 
237-244. 3 Jl 1903. 
Wildeman, E. de. Prunus Besseyi Bailey. Ic. Sel. Hort. Then. 3: 
127-130. pi. 112: N 1902. 
Wildeman, E. de. TZhibaudia grandifiora Ruiz et Pavon. Ic. Sel. 
Hort. Then. 3: 135-139. p/. r7g. N 1902. 
Native of Peru. 
