INDEX TO AMERICAN BOTANICAL LITERATURE 347 
Bryce, P. I. A fungus club attacking the oak scale. Rep. Quebec 
Soc. Protect. Plants 9: 110, I1I. 1917. 
Bryce, P. I. Can we improve potato storage methods? Rep. Quebec 
Soc. Protect. Plants 11: 53-58. pl. 8. 19109. 
Burlingham, G. S. Some new species of Russula. Mycologia 13: 
129-134. pl. 7 +f. 1-6. 25 Je 1921. 
Six new species from New England. 
Campbell, D. H. The gametophyte and embryo of Botrychium obli- 
gquum, Mihl. Ann. Bot. 35: 141-158. pl. 8 +f. 1-11. Ap 192I. 
Camus, J. S. Rice in the Philippines. Philipp. Bur. Agr. Bull. 37; 
1-90. pl. 1-47. 1921. 
Carpenter, D. S. Botanizing in Essex County [Vermont]. Vermont 
Bot. and Bird Clubs Joint Bull. 7: 15-18. Ap 1921. 
Choate, H. A. Chemical changes in wheat during germination. Bot. 
Gaz. 71: 409-425. pl. 28 +f. 1, 2. 17 Je 1921. 
Coons, G. H. Cherry leaf spot or yellow leaf. Michigan Agr. Coll. 
Quart. Bull. 3: 93-96. F 1921. [Illust.] 
DeToni, G. B., Forti, A.. & Howe, M. A. A new species of Laurencia 
from Chile . .. : Laurencia chilensis sp. nov. Nuov. Notar. 32: 
150-153. f. I-3- 1921. 
Dickson, B. T. Some plant diseases in the greenhouse. Rep. Quebec 
Soc. Protect. Plants 11: 46-48. pl. 3, 4. 1919. 
DuPorte, E. M. Insect carriers of plant diseases. Rep. Quebec Soc. 
Protect. Plants 11: 59-65. 1919. 
Durand, E. J. New or noteworthy Geoglossaceae. Mycologia 13: 
184-187. 25 Je 
Includes 2 new species of Trichoglossum. 
Durham, G. B. Growing tomatoes by tip cuttings. Jour. Hered. 12: 
40,41. 6 Je 1921. 
Dutton, D. L. Aspidium fragrans on Mount Horrid [Vermont]. Ver- 
mont Bot. and Bird Clubs Joint Bull. 7: 27. Ap 1921. 
Eastman, H. & Smith, W. P. Rare plants of Wells River [Vermont] 
and vicinity. Vermont Bot. and Bird Clubs Joint Bull. 7: 23. 
Ap 1921. 
Engler, A. Araceae-Aroideae und Araceae-Pistioideae. Pflanzen- 
reich IV. 23 F: 1-274. f. 1-63. 6 Jl 1920. 
Engler, A. Araceae. Pars generalis et index familiae generalis. Pflan- 
zenreich IV. 23 A: 1-71. 9 Jl 1920. 
