INDEX TO AMERICAN BOTANICAL LITERATURE 123 
Copeland, E. B. New species and a new genus of Borneo ferns, chiefly 
from the Kinabalu collections of Mrs. Clemens and Mr. Topping, 
cae Jour.Sci. 32: te! moa Ja 1917. 
Forty-four new species are descr 
Cfoulter,], J. M. Ellsworth Fane Hill. Bot. Gaz. 64 
15 Au 1917. [Portrait.] 
Curjar, A. M. The adaptation of Truog’s method for the determina- 
tion of carbon dioxide to plant respiration studies. Plant World 20: 
gan-ag%..7,.15. 5 19tf. 
Davis, W. E. Resistance of seed coats of Abutilon laa cee to intake 
of water. Bot. Gaz. 64: 166, 167. 15 Au 
i. 165, 106. 
Dearness, J. New or noteworthy North eee fungi. Myco- 
ceed 9: usobiae 24 N antl 
Detjen, L. :. Poliacton of the rotundifolia grapes. ie Elisha 
Mitchell Sci. Soc. 33: 120-127. N11 
Dorsey, M. J. The Duchess apple ee Jour. Heredity 8: 
565-567. 7.9. .-D 1917. 
Douglass, [H.] B. Mushroom poisoning. Torreya 17: 171-175. 
31 O 1917; 207-221. 24 Ja 1918. 
Drennan, G. T. Volunteer plants. Am. Bot. 23: 86-88. Au 1917. 
Dunham, E. N. Unusual habitats. Bryologist 20: 98, 99. N 1917. 
Dupler, A. W. The gametophytes of Taxus canadensis Marsh. Bot. 
Gaz. 64: 115-136. pl. 11-14. 15 Au 1917. 
Durfee, T. Lichens of the Mt. Monadnock oem, N. H.—No. 9. 
Bryologist 20: 99. N 1917. 
Elliott, J. A. The conduction of potassium cyanide in plants. 
pathology 7: 443-448. f. 1, 2. 3 D 1917. 
Evans, A. W. A new Lejeunea from Bermuda and the West Indies. 
Bull. Torrey Club 44: 525-528. pl. 24. 20 N 1917. 
Lejeunea minutiloba sp 
Evans, A. W. Pech ainacy list of Arizona Hepaticae. 
60-62. 15 Au I917. 
Faust, E. C. Resin secretion in Balsamorrhiza sagittata. Bot. Gaz. 
64: 441-479. pl. 28-31 +f. 1, 2. 18 D 191 
Fernald, M. L. A new alpine willow from the White Mountains. 
Rhodora 19: 221-223. 21 N 1917. 
Salix Peasei sp. nov 
Fernald, M. L. The boreal and subalpine variety of Spiraea latifolia. 
Rhodora 19: 254, 255. 5 D 1917. 
Fromme, F. D. Tylenchus tritici on wheat in Virginia. 
ogy 7: 452, 453, f. 1. 3 D 1917. 
Phyto- 
Bryologist 20: 
Phytopathol- 
