370 INDEX TO AMERICAN BOTANICAL LITERATURE 
Munz, P. A., & Johnston, I. M. Miscellaneous notes on plants 
of southern California—II. Bull. Torrey Club 49: 349- 
359- 27 Ja 1923. 
Includes new species in Sphaeralcea (1), Phlox (1), and Galium (1). 
Murrill, W. A. Dark-spored agarics. V. Psilocybe. Mycologia 
15: 1-22. 25 Ja 1923. 
Includes 8 new species. 
Nelson, J. C. Notes on the ballast-vegetation at Linnton, 
Oregon. Torreya 23: 1-3. F 1923. 
Oldenbusch, C. Stimulation of plants by carbon disulphide. 
Bull. Torrey Club 49: 375-389. 27 Ja 1923. 
Osterhout, G. E. What is Geranium caespitosum James? 
Bull. Torrey Club 50: 81-84. 23 F 1923. 
Rhoads, A. S. The formation and pathological anatomy of 
frost rings in conifers injured by late frosts. U.S. Dept. 
Agr. Bull. 1131: 1-16. pl. 1-6. 13 F 1923. 
Schaffner, J. H. Sex reversal in the Japanese hop. Bull. 
Torrey Club 50: 73-79. pl. 2. 23 F 1923. 
Schultz, E. S., & Folsom, D. A “spindling-tuber disease” of 
Irish potatoes. Science 11 57: 149. 2 F 1923. 
Seifriz, W. The gregarious flowering of the orchid Dendrobium 
crumenatum. Am. Jour. Bot. 10: 32-37. 3 F 1923. 
Shapovalov, M. Relation of potato skinspot to powdery scab. 
Jour. Agr. Research 23: 285-294. pl. 1-4 + f.1. 27 Ja 1923- 
Shaw, W. R. Merrillosphaera africana at Manila. Philipp. 
Jour. Sci. 22: 185-218. pl. 1-7. F 1923. 
Skinner, J. J., & Allison, F. E. Influence of fertilizers con- 
taining borax on the growth and fruiting of cotton. Jour. 
Agr. Research 23: 433-444. pl. 1-4. 10 F 1923. 
Smith, E. L. The histology of certain orchids with reference 
to mucilage secretion and crystal formation. Bull. Torrey 
Club 50: 1-16. pl. r. 7 F 1923. 
