214 INDEX to AMERICAN BOTANICAL LITERATURE 
Vinson, A. E. Fixing and staining tannin in plant tissues with nitrous 
ethers. Bot. Gaz. 49: 222-224. f. 7-8 15 Mr 1910. 
Vinson, A. E. The chemical organization of a typical fruit. Plant 
World 13: 19-21. Ja 1gto. 
Waldron, L. R. A suggestion regarding heavy and light seed grain. 
Am. Nat. 44: 48-56. Ja 1gIo. 
Waldron L. R. Heredity in populations and in pure lines. Plant 
World 13: 1-12. f. 1-5. Ja IgIo. 
Weingart, W. Cereus Regelii Weing. sp. n. Monats. Kakteenk. 20: 
33-36. 15 Mr tgto. 
Whitford, H. N. Studies in the vegetation of the Philippines.— I. 
The composition and volume of the Dipterocarp forests of the Philip- 
pines. Philipp. Jour. Sci. 4: Bot. 699-725. p/. 72-38. 10 Ja 
IgIo 
Wiegand, K. M. The extension of some ranges in eastern Massachu- 
setts. Rhodora 12: 38, 39 9 F 1gto. 
Wilson, P. Notes on Aufaceae —III. Bull. Torrey Club 37: 85, 
5 Mr 1g10. 
Includes 9 new combinations in Zanthoxylum, and Amyris Purpusii sp. nov. 
Wolf, F. A. A Fusarium disease of the pansy. Mycologia 2: 19-22. 
pl. 18. 
Describes Fusarium Violae sp. nov. 
Wooton, E.0. The larkspurs of New Mexico. Bull. Torrey Club 
: $141. to FB 1o1o 
Includes § new species. 
Wright, C.H. Urceocharis edentata C. H. Wright. [In Decades 
Kewenses — 55.] Kew Bull. Misc. Inf. 1910: 24. F 1910. 
Native in Peru, 
Wuist, E. D. The physiological conditions for the development of 
monoecious prothallia in Oxoclea Struthiopteris. Bot. Gaz. 49: 
216-218. 15 Mr 1910. 
Yamanouchi, S. Chromosomes in Osmunda. Bot. Gaz. 49: 1-12. 
pl. I. 22 Ja 1910. 
