INDEX TO AMERICAN BOTANICAL LITERATURE 33 
Klugh, A. B. Festuca occidentalis in Ottawa. Ottawa Nat. 25: 123; 
N rort. 
Knowlton, C. H., and others. Report on the flora of the Boston district. 
Rhodora 13: 232-235. 25 N IQII. 
Koidzumi, G. Plantae siphonogamae a N. Yokoyama anno 1907 in 
Alaska arctica, Tschuktschore et Kamtschatka collectae. Bot. Mag. 
25: 203-222. O 1o1r. 
Kunze, R. E. Beitrage zur sicheren Unterscheidung von Echinocactus 
Wislizeni Engelm. u. E. Lecontei Engelm. Monats. Kakteenk. 21: 
156. 15 O rort. 
Land, W. J. G. An electrical constant temperature apparatus. Bot. 
Gaz. 52: 391-399. f. I=g.° 2h 10tt. 
Lemoine, [M.] Structure anatomique des Mélobésiées. Application 
a la classification. Ann. Inst. Océanog. 2?: 1-213. pl. 1-5. 15 F 
IQII. 
Lewis, I. M. The seedling of Quercus virginiana. Plant World 14: 
119-123. f. I-10. My 1911. 
Livingston, B. E. A radio-atmometer for comparing light intensities. 
Plant World 14: 96-99. Ap I9gtit. 
Livingston, B. E. The relation of the osmotic pressure of the cell 
sap in plants to arid habitats. Plant World 14: 153-164. Jl 1911. 
MacDougal, D. T. Climatic selection in a hybrid progeny. Plant 
World 14: 129-131. f. 1. Je 1911. 
MacDougal, D. T. Induced and occasional parasitism. Bull. Torrey 
Club 38: 473-480. pl. 22-25. 4N 1981. 
MacDougal, D. T. The inheritance of habitat effects by plants. 
Plant World 14: 53-59. N 1o1r. 
MacDougal, D. T. The water relations of desert plants Pop. Sci. 
Mo. 79: 540-553. f. 1-5. D911. 
McMurray, N. A sunny crop. Am. Bot. 17: 70-72. Au 19gII. 
Macnamara, C. Notes on native orchids. Ottawa Nat. 25: 118-121. 
N rort. 
Marchal, E. Apparition en Belgique de l’oidium americain du 
grosseillier. (Sphaerotheca Mors-Uvae Berk. et Curt.) Bull. Soc. 
Roy. Bot. Belgique 46: 337, 338. 1 Mr roro. 
Markle, M.S. Two pine gametophytes in one ovule. Proc. Indiana 
Acad. Sci. 1910: 321. 191t. [Illust.] 
Maxon, W. R. A remarkable new fern from Panama. Smithsonian 
Misc. Coll. 56%: 1-5. pl. 1, 2. 22 N I9II. 
Polypodium podocarpum sp. nov. i 
Metcalf, H., & Collins, J. F. The control of the chestnut bark disease. 
U.S. Dept. Agr. Farmers’ Bull. 467: 1-24. 28 O 1911. 
