INDEX TO AMERICAN BOTANICAL. LITERATURE 347 
Girola, Cc; D. Agallas de corona del duraznero. Bol. Minis. 
Agric. 26: 257-259. pl. z,.2 (1 colored), Jl-S 1921, 
Pseudomonas tumefaciens. 
Girola, C. D.. Cultivo de la Yerba mate Torrefaceion y pre- 
Pataqion del producto. Bol. Minis Agric. 26: 447-488. /f. 
I- 1921. 
Girola, C. D. Sobre algunas enfermedades de la papa. Bol. 
Minis. Agric. 26: 260-264. pl. z, 2. JI-S 1921. 
Gleason, H. A.. The witch-hazels. Jour. New York Bot. 
Gard. 23: 17-19. F 1922. 
Goebel, K. Erdwurzeln mit Velamen. Flora 11821-26../f.4;52 
1922. 
Graff, P. W. Philippine Basidiomycetes—IV. Bull. Torrey 
Club 48: 285-295. 19 Ja 1922. 
Gress, E. M. Annotated list of fossil plants of the Dakota 
formation (Cretaceous) in the collections at the Carnegie 
Museum. Ann. — Mus. 13: 274-332. pl. 14, 15. 
1921. 
Includes 3 spp. nov. 
Greaves, J. E. Influence of salts on bacterial activities “of soil. 
ot. Gaz. 73: 161-180. Mr 1922 
Greenman, J. M. ‘Two new senecios from the West Indies. 
Ann. Missouri Bot. Gard. 8: 97-102. pl. 1-2. 9 Ja 1922. 
Includes S. subsquarrosus and S. Freemanti, spp. nov. 
Grout, A. J. Mosses of a Staten Island house and lot. Bryolo- 
gist 24: 64. 9 Ja 1922 
Guilliermond, M. A. Nouvelles observations sur l’origine des 
plastides dans les phanérogames. Rev. Gén. Bot. 33: 401- 
419, 449-466. f. 1-8. 1921. 
Haasis, F. W. ~ Relations between soil-type and root form of 
western yellow pine a Ecology 2: 292-303. f. 1-3. 
20 Ja 1922. 
Hall, H. M., & Long, F. L. Rubber content of North American 
plants. Carnegie. Inst.: Washington: Publ. 3133 I-65. pl. 
2-3. (202. 
