INDEX TO AMERICAN BOTANICAL LITERATURE 157 
Blake, S. F. Native names and uses of some plants of eastern 
Guatemala and Honduras. Contrib. U. S. Nat. Herb. 24: 
87-100. pl. 290-33. 1922. 
Blake, S. F. New plants from South and Central America 
collected by Wilson Poponoe. Proc. Biol. Soc. Washington 
35° 117-124... 17 O Ig22. 
Species of Tibouchina (1), Centronia (1), Gaultheria (1), Disterigma (2), 
Macleania (3), and Citharexylum (1). 
Blake, S.F. Two new species of letterwood (Piratinera). Jour. 
Washington Acad. Sci. 12: 391-399. f. 1. 19 O 1922. 
Both from Surinam. 
Blake, S. F. New South American Asteraceae collected by E. 
W.D. Holway. Bot. Gaz. 74: 414-430. pl. 19. 21 D 1922. 
Includes Monopholis gen. nov. and 16 new species in various genera. 
Blakeslee, A. F., Belling, J., & Harris, J. A. The probability 
established bya culture of given size that a matingis capable 
of producing only dominant individuals. Am. Nat. 56: 
458-461. O 1922. 
Blomquist, H. L. Dormancy in seeds of persimmon. Jour. 
Elisha Mitchell Soc. 38: 14. S 1922. 
Bonar, L. The life history of Rosellinia Caryae sp. nov. causing 
a hickory canker and disease. Phytopathology 12: 381- 
385. f. 1-3. 11 S 1922. 
Dothichiza Caryae sp. nov., imperfect stage. 
Bonns, W. W. A preliminary study of Claviceps purpurea in 
culture. Am. Jour. Bot. 9: 339-353. pl. 16-21. 30 Au 
1922. 
Boshnakian, S. The genetics of squareheadedness and_ of 
density in wheat, and the relation of these to other char- 
acters. Cornell Univ. Agr. Exp. Sta. Mem. 53: 801-882. 
pl. 67, 68 + f. 78-85. My 1922. 
Boyer, C. S. New and rare species of Diatomaceae. Contrib. 
Biol. & Micr. Sect. Acad. Nat. Sci. Philadelphia 1: 1-17. 
pl. 1-4. 15 Jl 1922. 
Includes 32 new species. 
