230 INDEX TO AMERICAN BOTANICAL LITERATURE 
Schmitz, H. Note concerning the decay of western yellow pine 
slash caused by Polyporus volvatus Peck. Phytopathology 
12: 494-496. f. 1. 5 D 1922. 
Sears, P. B. Variations in cytology and gross morphology of 
Taraxacum. Bot. Gaz. 73: 308-325. pl.g, 10. 15 Ap 1922; 
425-446. f. 1-9. 17 Je 1922. 
Seaver, F. J. Some edible cup-fungi. Jour. New York Bot. 
Gard. 23: 112-115. pl. 274. Au 1922. 
Seaver, F. J. Phyllostictales. Phyllostictaceae (pars). N. 
Am. Fl. 6: 1-84. 5 Ap 1922. 
Inc'udes 2 new species. 
Seaver, F. J. Studies in tropical eto baka etes—lI. 
Mycologia 14: 235-238. pl. 19. 1S 1 
Seckt, H. Estudios hidrobiologicos en la Argentina. Schi- 
zophyceae. Bol. Acad. Nac. Ci. Cordoba 25: 383-429. 
f. I-47. . 1922. 
Includes new species in Lyngbya (2), Anabaena (2), Homeothrix (1). 
Seward, A. C. On a collection of Carboniferous plants from 
Peru. Jour. Geol. Soc. 78: 278-284., pl. 13. 23 S 1922. 
Seward, A. C. A study in contrasts: the present and past 
distribution of certain ferns. Jour. Linnean Soc. 46: 219- 
240. pl. 16-19. 26 O 1922. 
Shaw, W.R. Janetosphaera, a new genus, and two new species 
of Volvox. Philipp. Jour. Sci. 20: 477-508. pl. 1-5 + f. 1-5. 
My 1922. 
Shaw, W.R. Merrillosphaera, a new genus of the Volvocaceae. 
Philipp. Jour. Sci. 21: 87-129. pl. 1-7 + f. 1. Jl 1922. 
Shear,C.L. Life history of an undescribed ascomycete isolated 
from a granular mycetoma of man. Mycologia 14: 239-243. 
fe. ES 1022: 
Describes Allescheria Boydii sp. nov. 
Shelford, V.E., & Gail, F.W. A study of light penetration into 
sea water made with the Kunz photo-electric cell with 
particular reference to the distribution of plants. Publ. 
Puget Sound Biol. Sta. 3: 141-176. pl. 24-30, 20 D 1922. 
