INDEX TO AMERICAN BOTANICAL LITERATURE 219 
Merrill, E. D. Die pflanzengeographische Scheidung von 
Formosa und den Philippinen. Bot. Jahrb. Syst., Pflan- 
zengesch. u. Pflanzengeog. 58: 599-604. 1 N 1923 
Molfino, J. F. Notas botanicas—II. Physis 7: 89-105. 12 
D 1923. . 
Morton, J. N. Wild black Be iets in northern locate dekdnecon 
For. Leaves 19: 92, 93. D1 
Murrill, W. A. Botanical features of Mountain Lake, Virginia. 
Jour. New York Bot. Gard. 24: 249-256. N 1923 
Murrill, W. A. Florida Fungi—I. Mycologia 15: 278, 279. 
21 D 1923. 
Namikawa, I. Growth of pollen tubes in self-pollinated apple 
flowers. Bot. Gaz. 76: 302-310. f. 1-10. 10 D 1923. 
Nichols, G. E. Cercis canadensis in Connecticut. Rhodora 
25: 203, 204. 4 D 1923. 
Norton, G. F. How to have fringed gentians. Jour. New York 
Bot. Gard. 24: 256-258. N 1923. 
Penland, C. W. T. Cytological behavior in Rosa. Bot. Gaz. 
76: 403-410. pl. 31, 32.. 28 D 1923. 
Perry, W. J. Mistletoe—the insidious enemy of trees. Am. 
For. 29: 748, 749. D 1923. [Illust.] 
Pittier, H. Note on plants collected in tropical America. 
Jour. Washington Acad. Sci. 13: 428-431. 19 N 1923. 
Pool, R. J. Xerophytism and comparative leaf anatomy in 
relation to transpiring power. Bot. Gaz. 76: 221-240. 
pl. 20-23. 10D 1923. 
Recknagel, A. B. Growth of white spruce in the Adirondacks. 
Jour. For. 21: 794, 795. D 1923. 
Rehder, A. New species, varieties and combinations from the 
herbarium and the collections of the Arnold Arboretum. 
Jour. Arnold Arb. 4: 107-116. 8 My 1923; 246-253. 
19 N 1923. 
