656 INDEX TO AMERICAN BOTANICAL LITERATURE 
[Popenoe, P.] Pollination in the pine. Jour. Heredity 7: 402-405. 
f. 7-10. S 1916. 
Quehl, L. Bermerkungen iiber einige arten von Mamillarien aus der 
Untergattung Coryphantha Engelm. Reihe Aulacothele Lem. 
Monats. Kakteenk. 22: 67, 68. 15 My 1912. 
Reddick, D. Powdery mildew of grapes and its control in the United 
States. Rep. Internat. Cong. Viticulture 1915: 117-125. Je 1916. 
Reed, G. B. The mode of action of plant peroxidases. Bot. Gaz. 62: 
299-996..753; 2: 15:5 1916: 
Rodrigues, J. B. Myrtacées du Paraguay recueillies par Mr. le Dr. 
Emile Hassler. 1-20. pl. 1-26. 1903. 
Rodrigues, J. B. L’Uiraéry et de son emploi. 1-180. pl. 1-7. 1903. 
Rolfe, R. A. Acacallis cyanea. Curt. Bot. Mag. IV. 12: pl. 8678. 
S 1916. 
A plant of the upper Amazon. 
Riibel, E. Die internationale pflanzengeographische Exkursion durch 
Nordamerika 1913. Actes Soc. Helvétique Sci. Nat. 977: 59-87- 
f. I-20, 1915. 
Rusby, H. H. Floral features of the American equatorial belt. Jour, 
N. Y. Bot. Gard. 17: 115-140. 12 S71916. 
Scheppegrell, W. Hay fever and its prevention. U.S. Public Health 
Serv. Reprint 349: 1-13. f. 1-16. 21 Jl 1916. [Illust.] 
Schmitz, H. Some observations on witches-brooms of cherries. Plant 
World 19: 239-242. Au 1916. 
Schneider, A. A parasitic Saccharomycete of the tomato. Phyto- 
pathology 6: 395-399. f. 7-4. O 1916. 
Shreve, E.B. An analysis of the cause of variations in the transpiring 
power of Cacti. Physiol. Researches 2: 73-127. f. 1-10. S 1916. 
Schréter, K. Ueber neuere pflanzengeographische Forschungen in 
Nordamerika. Actes Soc. Helvétique Sci. Nat. 97°: 213,214. 1915. 
Sinnott, E. W. The evolution of herbs. Science II. 44: 291-298. 
1S 1916. 
Stephani, F. Species Hepaticarum 3: 517-693. 1909. 
Includes new American species in Mastigobryum (13), Micropterygium (2) 
Psiloclada (1), Lepidozia (34), Blepharostoma (1), and Isotachis (13). Issued as 
Compl. Bull. Herb. Boissier. 
