Index to recent Literature relating to American Botany 
Beach, S.A. Investigations Concerning the Self-fertility of the Grape, 
Ig00-1902. N. Y. Agric. Exp. Sta. Bull. 223: 269-290. A/. 7, 2. 
D rgo02. 
Bolley, H.L. Flax and Flaxseed Selection. N. Dak. Agric. Exp. Sta. 
Bull. 55: 169-200. Mr 1903. _ [Illust. ] 
Booth, N.O. A Study of Grape Pollen. N. Y. Agric. Exp. Sta. Bull. 
224: 291-302. pl. r-64+f. 7. D 1902. 
Brandegee, T. S. Flora of the Providence Mountains [California]. 
Zoe, 5: 147-153. My 1903. 
Includes new species and varieties in Cowania and Pentstemon (2). 
Brandegee, T. S. Notes and New Species of Lower California Plants. 
Zoe, 5: 155-174. My 1903. 
Includes descriptions of 38 new species and varieties, in 33 genera. 
Brandegee, T. S. Notes on Papaveraceae. Zoe, 5: 174-177. My 
1903. 
Includes 3 new varieties of Placystemon Californicus. 
Brandegee, T. S. Notes on the Vegetation of the Colorado Desert. 
Zoe, 5: 153-155. My 1903. 
Includes Calycoseris Wrightii Californica var. nov. 
Campbell, D. H. Studies on the Araceae. The Embryo-sac and Em- 
bryo of Aglaonema and Spathiocarpa. Ann. Bot. 17: 665-687. 
bl. 30-32. S 1903. 
Cannon, W. A. Studies in Plant Hybrids: The Spermatogenesis of 
Hybrid Peas. Bull. Torrey Club, 30: 519-543. A/. 77-79. 50 
1903. 
Chamberlain, C. J. Methods in Plant Histology. i-vili. 1-159. ee 
I-74. Chicago, 1901. 
Coker, W.C. Selected Notes. II.— Liverworts. Bot. Gaz. 36: 225- 
230. 7. 7-5. 15S 1903. 
Craig, J. & Van Hook, J. M. Pink Rot, an Attendant of Apple Scab. 
Cornell Univ. Agric. Exp. Sta. Bull. 207: 159-171. pl J, 2 + f- 
36-40. N 1902. 
Cushman, J. A. Studies of Localized Stages in Some Plants of the 
Botanic Gardens of Harvard University. Am. Nat. 37: 243-259- 
J. I-51. Ap 1903. 
Davis, B. M. The Origin of the Sporophyte. Am. Nat. 37: 411- 
429. f. 1-5. Je 1903. 
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