INDEX TO AMERICAN BOTANICAL LITERATURE 15a 
Gustafson, F. G. Comparative studies on respiration— XI. The 
effect of hydrogen ion concentration on the respiration of Penzcil- 
lium chrysogenum. Jour. Gen. Physiol. 2: 617-626. 20 Jl 1920. 
Gustafson, F. G. Comparative studies on respiration— XII. A com- 
parison of the production of carbon dioxide by Penicillium and by a 
solution of dextrose and hydrogen peroxide: Jour. Gen. Physiol. 3: 
35-39. f. 152. 20S 1920. 
Haupt, A.W. Gametophyte and sex organs of Reboulia hemisphaerica. 
Bot. Gaz. 71: 61-74. f. I-21. 20 Ja 1921. 
Hervey, E. W. A rare variety of Vitis labrusca. Rhodora 22: 183, 
184. 14 Ja 1921. 
House, H. D. Wild flowers of New York. New York State Museum 
Mem. 15: 9-362. pl. 1-264 +f. I-35. 1919. 
Printed in 2 parts. 
Hoyt, W.D. Marine algae of Beaufort, Nforth] C[arolina], and adjacent 
regions. Bull. U. S. Bur. Fish. 36: 368-556 + iv. pl. 84-118 +f. 
I-47. 30 D 1920. 
Includes new species in Streblonema (1) and Nitophyllum. (x). 
Jeffrey, E. C., & Torrey, R. E. Physiological and morphological 
correlations in herbaceous angiosperms. Bot. Gaz. 71: I-3I. 
pl. 1-7 +f. 1-4. 20 Ja 1921. 
Kelley, W. P., & Cummins, A. B. Composition of normal and mottled 
citrus leaves. Jour. Agric. Research 20: 161-191. 1 N 1920. 
Krianzlin, F. Orchidaceae ssa Americanae. Vidensk. Meddel. 
Dansk. Naturh. Forening 71: 
Includes new American species in Prerotai (2), Restrepia (1), Sobralia (1) 
Macradenia (1), Warmingia (1), Habenar 
Kudo, R. Studies on ieee Illinois Biol. Monog. 5, No. 3, 4: 
1-265. pl. 1-25 +f. 1, 2. 31 D 1920. 
A synopsis of genera and species of Myxosporidia. 
Ladbrook, J. A new species of Coupoui. Jour. Bot. 58: 176. 177. 
Jl 1920 
Coupout eis from Guiana. 
Lamb, G. N. American grown cork. Am. For. 27: 15, 16. Ja 1921. 
Leachman, J. C. Indian uses of kelp. Sci. Am. Mo. 3: 137-140. 
F 1921. 
Lillie, R.S. The place of life in nature. Sci. Am. Mo. 3: 112-117. 
F 1921. 
Lloyd, C. G. Mycological notes 64: 985-1029. f. 1748-1859 + 3 
portraits. S 1920. 
Includes translation of article by C. Torrend: The Polyporaceae of Brazil. 
