254 INDEX TO AMERICAN BOTANICAL LITERATURE 
Barton, J. E. The amount of standing timber in Kentucky. 
Min. and For. Resources Kentucky V. 1: 251-284. 
Beccari, O., & Rock, J. F. A monographic study of the genus 
Pritchardia. Mem. B. P. Bishop Mus. 8: 1-77. pl. I-24. 
1921. 
Includes 13 new species from the Hawaiian Islands. 
Belling, J. The behavior of homologous chromosomes in a 
tpl canna. Proc. Nat. Acad. Sci. 7: 197-201. f. 1. 2. 
Jl. 
ae H. M. Further consideration of the sizes of vein 
islets of leaves as an age determinant. Science II. 55: 399, 
400. 14 Ap 1922. 
Benedict, R. C. Is Botrychium dissectum a sterile mutant of 
B. obliquum? Am. Fern. Jour. 11: 53-55. 1921. 
Benedict, R. C. Nephrolepis nutrition. Am. Fern Jour. 11: 
41-43. 1921. [Illust.] 
Berry, E. W. Tertiary fossil plants from Venezuela. Proc. 
U. S. Nat. Mus. 59: 553-579.. pl. 107-109. 1921. 
Bowman, H. H. M. Histological variations in Rhizophora 
Mangle. Michigan Acad. Sci. Rep. 22: 129-134. pl. 9-12. 
Au 192I. 
Britton, N. L. George Valentine Nash. aa New York Bot. 
Gard. 22: 145-147. pl. 261. Au 1921 
Brown, F.-B. H. Origin of the Hawaiian flora. Proc. Pan- 
Pacific Sci. Confer. 1: 131-142. 1921 
Brown, L. L. Canadian Sitka spruce, its mechanical and phy- 
sical properties. Canada Dept. Inter. For. Bull. 71: 1-39. 
f. I-20. ‘1921. 
Brunswik, H. Uber Hesperidinspharite im lebenden Hautgewebe 
von Antherium Binotii Lenden. Ber. Deutsch. Bot. Ges. 
39: 208-212. Je 1921. 
Buscalioni, L., & Muscatello, G. Studio monografico sulle 
specie americane del gen. ‘“‘Saurauia’’ Willd. Malpighia 
: I-32; 97-112. I92I. 
Includes Saurauia intermedia sp. nov. from Guatemala. 
