158 INDEX TO AMERICAN BOTANICAL LITERATURE 
a oe aca aieea laws in regeneration. Jour. Gen. Physiol. 
7-307. J. 1-4; 651-657. f., 1-3. 20 Jl 1920. 
sisha Siocgksiok calycinum Salisb. 
Mazza, A. Saggio di algologia oceanica. Nuova~ Notarisia 28: 
70-110; 176-239. 1917; 20: 1-34; 57-112. 1918. 
Mazza, A. Aggiunte al saggio di algologia oceanica. Nuova Notarisia 
30: I-62. 1919; 31: I-64; 93-160. 1920. 
Munns, E. R. High ata shania and eucalypts. Jour. For. 19: 
25-33. Ja 1921. 
Nash, G. V. Hardy woody plants in the New York Botanical Garden. 
Jour. N. Y. Bot. Gard. 21: 74-77; 119-124. 1920. 
Noriega, J.M. Las plantas Mexicanas (cont.). Bol. Dir. Estud. Biol. 
2: 122-161. f. 1837. Ja 1917. 
Ostenfeld, C. H. A list of arctic Caryophyllaceae. Meddel. Grén- 
land 37: 223-227. 1920. 
Includes several new combinations. 
Pack, D. A. After-ripening and germination of eter seeds. 
Bot. Gaz. 71: 32-60. f. 1. 20 Ja 1921. 
Pammel, L. H. The Saebersy in Iowa and adjacent states. Proc. 
lowa Acad. Sci. 26: 193-237. f. 52-82. 191 
Pammel, L. H. The relation of native grasses to Puccinia graminis 
in the region of Iowa, western Illinois, Wisconsin, southern Minne- 
sota, and eastern South Dakota. Proc. Iowa Acad. Sci. 26: 163-192. 
f. 4I-§1. 1919. : 
Peck, M. E. Study of a section of ian coast flora. Proc. Iowa 
Acad. Sci. 26: 337-362. 19109. 
Reinking, O. A. Higher Basidiomycetes from the Philippines and 
their hosts—III. Philipp. Jour. Sci. 16: 527-537. My 1920. 
[H. H. Rusby]. New botanical drugs sought. Pharm. Era 53: 
321-324. N 1920. 
Rydberg, P. A. Notes on Rosaceae—XII. Roses of northeastern 
North America. Bull. Torrey Club 47: 45-66. 10 Mr 1920. 
Rydberg, P. A. Phytogeographical notes on the Rocky Mountain 
region—IX. Wooded formations of the Montane Zone of the 
, Southern Rockies. Bull. Torrey Club 47: 441-454. 200 1920. 
Sawyer, M. L. Hybridization in Iris. Proc. Iowa Acad. Sci. 26: 
363, 364. 1919. 
Schufeldt, R. W. Tramps through the Southern States—II. Am. 
For. 26: 540-547. S 1920. [Illust.] 
