INDEX TO AMERICAN BOTANICAL LITERATURE 53 
Wakefield, E.M. On two species of Ovulariopsis from the West Indies. 
Kew Bull. Misc. Inform. 1920: 235-238. 1920. 
Two new species. 
Waldron, R.A. The peanut (Arachis hypogaea)—its history, histology, 
physiology and utility. Contr. Bot. Lab. Univ. Pennsylvania 4: 
301-338. pl. 79, 8c. 1920. 
Walker, L. B. Developments of Cyathus fascicularis, C. striatus and 
Crucibulum vulgare. Bot. Gaz. '70: 1-24. pl. 6 + f. I-3. 3 24 Jl 1920. 
Watson, E. E. ae rostrata. Addisonia 5: 25, 26. DL. 173,230 Je 
1920. 
Weatherwax, P. A cieeneasaee as to the structure of the ear of 
maize. Bull. Torrey Club 47: 359-362. f. 1-6. 50 1920. 
Weatherby, C. A. A European ict in New England. Rhodora 
22: 143. 23. 5:1920 
Primula officinalis in Calaacitun. 
Weatherby, C. A. More interesting fern localities. Amer. Fern 
Jour. 10: 57-59. 29 Je 1920. 
Weatherby, C. A. Varieties of Pityrogramma triangularis.. Rhodora 
22: 113-120. 3 Au 1920. 
Two new varieties. 
Weidman, R. H. A study of windfall loss of western yellow pine in 
selection cuttings fifteen to thirty years old. Jour. For. 18: 616-622. 
1920. 
Weingart, W. Cereus Jusbertii Rev. und Cereus Bonplandii Parm. var. 
brevispinus Gruson.. Monatschr. Kakteenk. 29: 121-124. N I9I19- 
Weingart, W. Die Grésse von Cereensamen. Monatschr. Kakteenk. 
29: 132. N 1979. 
Weir, J. R. Note on the pathological effects of blazing trees. Phyto- 
pathology 10: 371-373. 18 Au 1920. 
Weiss, H. B., & West, E. Fungous insects and their hosts. Proc. 
Biol. Soc. Wash. 33: I-19. pl. z. 24 Jl 1920. 
Wells, B. W. Early stages in the development of certain Pachypsylla 
galls on Celtis. Am. Jour. Bot. 7: 275-285. pl. 18. 6 Au 1920. 
Wherry, E. T. Observations on the soil acidity of Ericaceae and asso- 
ciated plants in the Middle Atlantic States. Proc. Acad. Nat. Sci. 
Philadelphia 72: 84-119. Je 1920. 
Wherry, E. T. Plant distribution around salt inarshes in. relation to 
soil acidity. Ecology 1: 42-48. Ja 1920... 
Wherry, E.T. A fruitless search for Asplenium fontonum in x Pou 
vania. Am. Fern Jour. 10: 90-91. 1920. 
