120 INDEX TO AMERICAN BOTANICAL LITERATURE 
Loesener, T. Celastraceae, in Pilger, R., Plantae Liitzelbergi- 
anae brasilienses II. Notizbl. Bot. Gart: u. Mus. Berlin- 
Dahlem 8: 535, 536. 15 Au 1923. 
Includes new species in Maytenus (1) and Plenckia (1). 
Mains, E. B. & Leighty, C. E. Resistance in rye to leaf rust. 
Puccinia dispersa Erikss. Jour. Agr. Research 25: 243- 
252. D1. 3; 2. 4 Aw 1923: 
Martin, R. D., Ballard, W. W., & Simpson, D. M. Growth of 
fruiting parts in cotton plants. Jour. Agr. Research 25: 
195-208. pl. r, 2. 28 Jl 1923. 
Mason, T. G. Ligneous zonation and die-back in the lime 
(Citrus medica, var. acida) in the West Indies. Sci. 
Proc. Roy. Dublin Soc. 17: 255-262. pl. 13-16 + f. I. 
Au 1923. 
Merrill, E.D. Distribution of the Dipterocarpaceae. Philipp. 
Jour. Sci. 23: 1-34. pl. 1-8. Jl 1923. 
Murneek, A. E. Studies of physical and morphological changes 
in Bartlett pears. Am. Jour. Bot. 10: 310-324. pl. 24 
+ f. 1,2. 2 Jil 1923 
Murrill, W. A. Springtime in Florida. Jour. New York Bot. 
Gard. 24: 125-135. Jl 1923. 
Nelson, J. C. Additions to the flora of western Oregon during 
1922. Torreya 23: 63-67. Au 1923 
Neumayer, H. Einige Fragen der speziellen Systematik, erldut- 
ert an einer Grupe der Gattung Silene. Osterr. Bot. 
Zeitschr. 72: 276-287. Au 1923. 
Nye, H. A. A station in Maine for Ilex verticillata, forma 
chrysocarpa. Rhodora 25: 148. 28 Au 1923. 
Orton, W. A. & Beattie, R. K. The biological basis of foreign 
plant quarantines. Phytopathology 13: 295-306. 28 
Jl 1923. 
Osterhout,G.E. Twonew plants from Colorado. Bull. Torrey 
Club 50: 217, 218. 6 Jl 1923. 
Draba alpicola and Oreocarya stricta, spp. nov. 
