402 INDEX TO AMERICAN BOTANICAL LITERATURE 
Bates, C. G. Physiological requirements of Rocky Mountain 
trees. Jour. Agr. Research 24: 97-164. pl. 1-7 + f: 1-4. 
14 Ap 1923. 
Belling, J.,& Blakeslee, A.F. The reduction division in haploid, 
triploid and tetraploid Daturas. Proc. Nat. Acad. Sci. 
9: 106-I1I. 15 Ap 1923. 
Berry, E. W. Tertiary plants from the Andes of Cajamarca, 
Peru. Am. Jour. Sci. 205: 239-246. Mr 1923. 
Includes 3 new species. 
Blake,S.F. New composites from Salvador. Jour. Washington 
Acad. Sci. 13: 143-146. 19 Ap 1923. 
Rensonia, gen. & sp. nov., and new species in Vernonia (1) and Zexmenia 
(1). 
Blake,S.F. Notes on the North American species of Limonium. 
Rhodora 25: 55-60. 9 Ap 1923. 
Blake,S.F. Oecnothera perennis L. var. rectipilis (Blake) comb. 
nov. Rhodora 25: 47. 6 Mr 192 
Blake, S. F. Three new composites from Bolivia. Proc. Biol. 
Soc. Washington 36: 51-54. 28 Mr 1923. 
New species in Erigeron (1), Aspilia (1), and Calea (1). 
Boswell, V. R. Dehydration of certain plant tissues. Bot. 
Gaz. 75: 86-94. f. 1-7. a3 Mer 1023. 
Brandes, E. W., & Klaphaak, P. J. Cultivated and wild hosts 
of sugar-cane or grass mosaic. Jour. Agr. Research 24: 
247-262. pl. I-4. 21 Ap 1923. 
Breazeale, J.E. N utrition of plants considered as an electrical 
phenomenon. four. Agr. Research 24: 41-54. f. I-5. 7 
Ap 1923. 
Brison, F. W. Variations in pecans. Jour. Hered. 13: 367-3609. 
f. 16. 25 Ap 1923. 
Britton, N. L., & Standley, P.C. Three new plants of the family 
ee: from cere Jour. Washington Acad. Sci. 
13: 105-107. 19 Mri 
New species in Evea (1) cae aia (ry: 
