454 INDEX TO AMERICAN BOTANICAL LITERATURE 
Vaupel, F. Echinocactus pilosus Gal. Monats. Kakteenk. 22: 86. 
15 Je 1912.  [Illust.] 
Webber, H. J. The production of new and improved varieties of 
timothy. Cornell Univ. Agr. Exp. Sta. Bull. 313: 339-381. pl. I-10. 
Ap 1912. 
Weingart, W. Echinocereus Weinbergii spec. nov. Monats. Kakteenk. 
ga: 84, 84. - 15 Je 1912. 
Wheeler, L. A. Rare plants of West River Valley. (Abstract.) Bull. 
Vermont Bot. Club 7: 13. My 1912. 
White, D. Age of the Worcester phyllite. Jour. Washington Acad. 
Sci. 2: 114-118. 4 Mr 1912. 
Also contains notes on fossil plants. 
White, D. The characters of the fossil plant Gigantopteris Schenk and 
its occurrence in North America. Proc. U. S. Nat. Mus. 41: 493- 
516. pl. 43-49. 8 F 1912. ; 
Wiegand, K. M. The genus Amelanchier in eastern North America. 
Rhodora 14: 117-161. pl. 95, 96. 20 Jl 1912. 
Includes Amelanchier humilis, A. stolonifera, and A. laevis. 
Wilcox, E. M., & Link, G.K.K. A new form of pure culture chamber. 
Phytopathology 2: 120. f. 7. Je 1912. 
Williston, R. Discoid gemmae in Radula. Bull. Torrey Club 39: 329- 
346. f..2-37. 10 Ji 1913. 
Winslow, E. J. Opportunities in Essex County. Bull. Vermon 
Club 7: 14. My 1912. 
Woodward, R. W. New Vermont plants. Bull. Vermont Bot. Club 7: 
27. My 1613. 
Wooton, E. O., & Standley, P.C. The grasses and grass-like plants of 
New Mexico: New Mexico Col. Agrand M. A. Agc. Bde Ste eee 
81: 3-176. 1912. [Illust.] 
Wright, C. H. Lycium pallidum. Curt. Bot. Mag. IV. 8: p!. 8440: 
Je 1912. 
A plant from southern United States and northern Mexico. 
Young, W. Y. Notes on the botany of medicinal plants. 
Pharm. 84: 256-262. Je 1912. é 
Zeh, W. Neue Arten der Gattung Liagora. Notizbl. Kénigl. Bot. 
Gart. Berlin 5: 268-273. 27 Je 1912. 
Includes Liagora californica, L. rosacea, and L. Pilgeriana, 
t Bot. 
Am. Jour. 
from America. 
