162 INDEX TO AMERICAN BOTANICAL LITERATURE 
Dana, B. F. Two new Sclerotinia diseases. Phytopathology 
11: 225-228. pl. 8. 6 O 1921. 
Doolittle, S. P. Overwintering of the bacterial wilt of cucur- 
bits. Phytopathology 11: 299, 300. 15 N 1921. 
Dupler, A. W. The air chambers of Reboulia hemisphaerica. 
Bull. Torrey Club 48: 241-252. f. 1-22. 13 D 1921. 
Ehlers, J. H. Panicum virgatum var. cubense in Michigan. 
Rhodora 23: 200. 15 D 1921. 
Eldridge, A. E. Woodland flowers of the prairie region. Am. 
For. 27: 714-716. N 1921. [Illust.] 
Emerson, F. W. Subterranean organs of bog plants. Bot. 
Gaz. 72: 359-374. f. I-1r. 15 D 1921. 
Emerson, R. A. Genetic evidence of aberrant chromosome 
behavior in maize endosperum. Am. Jour. Bot. 8: 411-424. 
Jor 14: N 1931. 
Ensign, M. R. Area of vein-islets in leaves of certain plants 
as an age determinant. Am. Jour. Bot. 8: 433-441. pl. 
azo 9 I 
Evans, A. W. The genus Riccardia in Chile. Trans. Con- 
necticut Acad. Sci. 25: 93-209. f. 1-13. D 1921. 
Includes 3 new species and 17 new combinations. - 
Fairman, C.E. The fungi of our common nuts and pits. Proc. 
Rochester — Sci. 6: 73-115. pl. 15-20. S 1921. 
Includes Sch. 14. 
, gen. nov ,and 27 new species in various genera. 
Fehlinger, H. Beatieninde Faserpflanzen. Tropenpflanzer 
24: 173-176. D 1921. 
Fujioka, M., & Takahaski, K. On the cause of the darkening 
of the heartwood of ec caunies japonica Don. Jour. For. 
19: 844-866. D 1921 
Gardner, G. A. onenaiees sur les articles du Reverend Pére 
Fontanel, S.J. Nat. Canad. 48: 49—-56. 
Gardner, M. W., & Gilbert, W. W. Field tests with cucumber 
angular leafspot and anthracnose. Phytopathology 11: 
298, 299. 15 N 1921. 
Gardner, M. W., & Kendrick, J. B. Soybean mosaic. Jour. 
Agr. Research 22: 111-113. pl. 18 19. 8 O 1921. 
