INDEX TO AMERICAN BOTANICAL LITERATURE 55 
Poindexter, C.C. The development of the spikelet and grain of corn. 
Ohio Nat. 4: 3-9. f. z-7z. N 1903. 
Prenger, A. Systematisch-anatomische Untersuchungen von Blatt und 
‘Achse bei den Podalyrieen-Gattungen der nérdlichen Hemisphire 
und des Kapgebietes, u. s. w. (Dissert. Univ. Erlangen.) 1-111. 
Erlangen, 1got. 
Rehm, H. Ascomyceten-Studien I. Hedwigia, 42 (Beibl.): 172- 
176. 4 Jl 1903. 
Includes the descriptions of several new South American species. 
Rosenthaler, L. Phytochemische Untersuchung der Fischfangpflanze 
Verbascum sinuatum 1. und einiger anderer Scrophulariaceen. (Dis- 
sert. Univ. Strassburg.) 1-109. Frankfurt a. M., 1got. 
Includes an annotated list of all plants which are used to poison fish. 
Rothrock, J. T. The black willow (Sa/x migra Marsh. ) as a protector 
of river banks. Statem. Penn. Dep. Forestry, 1901-02: 136, 137. 
pl. 32. 1902. 
Sargent, C.S. Crataegus in Rochester, New York. Proc. Rochester 
Acad. Sci. 4: 93-136. 1 Je 1903. 
Includes descriptions of 27 new species. 
Sargent, C.S. ‘Trees and shrubs; illustrations of new or little known 
ligneous plants. (Part II.) 1: 51-100. p/. 26-50. Boston, 13 
Y 1903. 
Includes new North American species in Crataegus (8) and Solanum. 
Schaffner, J. H. The maximum height of plants, V. Ohio Nat. 4: 
a ey. NN 1964. 
| Schaffner, J. H. Ohio plants with contractile roots. Ohio Nat. 3: 
410. Ap 1903. 
Schaffner, J. H. Poisonous and other injurious plants of Ohio. Ohio 
Nat. 4: 16-19. N 1903; 32-35. D 1903. 
Schulz,0.E. Cruciferae. Symb. Antill. 3: 493-523- 1 My 1903. 
Recognizes 23 Antillean species, in II genera. 
Schumann, K. Gesamtbeschreibung der Kakteen. Nachtrage 1898 
bis rg02. i-viii. 1-71. 7. 7-375. Neudamm, 1903. 
With descriptions of new species in several genera. 
Shimek, B. Addenda to the flora of Lyon County. Bull. Lab. Nat. 
; Hist. State Univ. Iowa, 5: 215, 216. My 19o!. 
4 Spegazzini, C. Nova addenda ad floram Patagonicam, Pars III. 
Anal. Mus. Nac. Buenos Aires, 7: 135-144. 27 F 1902 ; 145-160. 
