346 INDEX TO AMERICAN BOTANICAL LITERATURE 
Baxter, S. N. The sassafras. Flor. Exch. 51: 1469. 25 Je 1921. 
[Illust.] 
A trio of mammoth trees [near Philadelphia] and shoulder formation seldom seen. 
Beccari, O. Le palme americane della tribi delle Corypheae. Webbia 
2: 1-343. D 1907. 
Includes new species in Sabal (5), Brahea (2), Erythea (1), Copernicia (4), Thrinax 
(3), Coccothrinax (3). 
Becerra, M. E. La “Papaya Orejona”’ (Pileus pentaphyllus). Mem. 
Soc. Cient. Antonio Alzate 37: 357-361. pl. 36. Ap 1921. 
A new species from Mexico. 
Benoist, R. Contribution a l'étude de la flore des Guyanes. Bull. 
Soc. Bot. France 66: 261-266, 317-328. 4 F 1920; 357-370, 381- 
398. 7 My 1920. 
Includes new species in Protium (1), Sclerolobium (2); ye (x); 
Blake, S. F. The anay, a new edible-fruited relative of the avocado. 
Jour. Washington Acad. Sci. 9: 457-462. f. 1. 4 O 1919. 
Describes 2 new species of Hufelandia from Central America. 
Blake, S. F. A preliminary revision of the North American and West 
Indian avocados. Jour. Washington Acad. Sci. 10: 9-21. f. I, 2. 
4 Ja 1920. 
Includes 2 new species of Persea. 
Blake, S. F. Revision of Ichihyomethia, a genus of plants used for 
poisoning fish. Jour. Washington Acad. Sci.9: 241-252. 4 My 1919. 
ncludes 2 new species. 
Blake, S. F. The American species of Maximilianea (Cochlospermum). 
Jour. Washington Acad. Sci. 11: 125-132. f. 1. 19 Mr 1921. 
Includes M. triphylla sp. nov. from Venezuela. 
Blakeslee, A. F. The Globe mutant in the Jimson Weed (Datura 
Stramonium). Genetics 6: 241-264. f. 1. My 1921 
Boynton, K. R. Physalis Franchetii. Addisonia §: 57, 58. pl. 180. 
18 Je 1921. 
Boynton, K. R. Rudbeckia laciniata. Addisonia 5: 51, 52. pl. 186. 
18 Je 1921. 
Bradley, C. B. The phyllotaxy of Phoenix canariensis. Torreya 21: 
37-44. pl. 2,2. Je 1921: 
Brainerd, E. Violets collected at Tyson [Vermont]. Vermont Bot. 
and Bird Clubs Joint Bull. 7: 18, 19. Ap 1921. 
Britton, N. L., & Rose, J. N. Neoabbottia, a new cactus genus from 
Hispaniola. Smithson. Misc. Coll. 72°: 1-6. pl. 1-4 +/f.1, 2. 15 
Je 1921. , 
