54 



Mycologia 



Johnston, J. R. El platano y sus enfermedades. Revista Agr. 



Com. y Trab. 1 : 419-421. Ap 1918. [Illust.] 

 Krieger, L. C. C. Common mushrooms of the United States. 



Nat. Geog. Mag. 37: 387-439. pi 1-16. My 1920. 

 Moodie, R. L. Bacteria in the American Permian. Science II. 



54: 194, 195- 2 S 1921. 

 Pennington, L. H., & Others. Investigations of Cronartium ribi- 



cola in 1920. Phytopathology 11: 170-172. Ap 1921. 

 Petrak, F. Mykologische Notizen. — II. Ann. Mycol. 19: 17- 



128. 1921. 



Povah, A. H. W. An attack of poplar canker following fire in- 

 jury. Phytopathology 11: 157-165. /. 1-3. Ap 1921. 



Ramirez, R. El chahiuxtle rojo del frijol. Revista Agricola 5: 

 830. Ap 1921. [Illust.] 



Ramirez, R. La cenicilla del tomate, Pky salts dub esc ens L. Re- 

 vista Agricola 5: 830. Ap 1921. [Illust.] 



Shufeldt, R. W. Common American mushrooms. Am. For. 27 : 

 579-587- /■ r-13. S 1921. 



Smith, E. F. Effect of crowngall inoculations on Bryophyllum. 

 Jour. Agr. Research 21 : 593-597. pi. 101-110. 15 Jl 1921. 



Snell, W. H. Chlamydospores of Fomes officinalis in nature. 

 Phytopathology 11: 173-175. /. 1. Ap 1921. 



Thatcher, L. E. A fungus disease suppressing expression of awns 

 in a wheat-spelt hybrid. Jour. Agr. Research 21 : 699-700. 

 pi 135. 15 Au 1921. 



Thurston, H. W., Jr., & Orton, C. R. A Phytophthora parasitic 

 on peony. Science II. 54: 170, 171. 26 Au 1921. 



Tisdale, W. H. Two Sclerotium diseases of rice. Jour. Agr. Re- 

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Weimer, J. L., & Harter, L. I. Respiration and carbohydrate 

 changes produced in sweet potatoes by Rhizopus Tritici. Jour. 

 Agr. Research 21: 627-635. 1 Au 1921. 



Weir, J. R. Note on Cenangium Abietis (Pers.) Rhem on Pinus 

 ponderosa. Phytopathology 11: 166-170. /. 1 . Ap 1921. 



Weiss, F., & Harvey, R. B. Catalose hydrogen-ion concentration 

 and growth in the potato wart disease. Jour. Agr. Research 21 : 

 589-592. . 15 Jl 1921. 



