FLOWER POLLINATION 365 



Gaz., Chicago (Ill.)j xxxiii, 1902, pp. 451-60. — Ab. : Bot. Centralbl., Cassel, 

 xc, 1902, p. 473. 



3575. Webb, R. J. Pollination of the closed Gentian by humble-bees. [Gentiana 



Andrewsii.] Amer. Nat., Boston (Mass.), xxxii, 1898, p. 265. 



3576. Webber, Herbert J. Yucca pollination. Amer. Nat., Philadelphia, xxxvi, 1892, 



p. 374. — Ab. : Justs bot. Jahresber., Leipzig, xx, (1892) 1894, p. 504. 



3577. On a supposed immediate effect of pollen. Science, New York, Ser. 2, iv, 1896, 



pp. 498-500. 



3578. Phenomena and development of fecundation. Amer. Nat., Boston (Mass.), xxvi, 



1892, pp. 103-11, 287-310. 



3579. Notes on the fecundation of Zamia and the pollen tube apparatus of Ginkgo. 



Bot. Gaz., Chicago (111.), xxiv, 1897, pp. 225-35. — Ab. : Bot. Centralbl., Cassel, 

 Ixxiii, 1898, pp. 395-6. 



3580. Influence of environment in the origination of plant varieties. Yearbook U.S. 



Dept. Agric, Washington (D.C.), 1896, pp. 89-106.— Ab.: Bot. Centralbl., 

 Cassel, Ixxvi, 1898, p. 237. 



3581. Peculiar structures occurring in the pollen tube of Zamia. Bot. Gaz., Chicago 



(111.), xxiii, 1897, pp. 543-9.— Ab. : Bot. Centralbl., Cassel, Ixxiii, 1898, 



PP- 393-4- 



3582. The development of the antherozoids of Zamia. Op. cit., xxiv, 1897, pp. 16-22. — 



Ab. : Bot. Centralbl., Cassel, Ixxiii, 1898, pp. 394-5. 



3583. The Water-hyacinth and its relation to navigation in Florida. [Eichomia crassi- 



pes.] Bull. U.S. Dept. Agric, Div. Bot., Washington (D.C.), No. 18, 1897. 

 — Ab. : Bot. Centralbl., Cassel, Ixxvi, 1898, p. 284. 



3584. Improvement of Plants by Selection. Yearbook U.S. Dept. Agric, Washington 



(D.C.), (1898) 1899, pp. 355-76. 



3585. Complications in Citrus hybridization caused by polyembryony. (Ab. : Soc for 



plant morph. and physiol., Yale meeting, 1899.) Bot. Gaz., Chicago (111.), 

 xxix, 1900, p. 141. 



3586. Xenia, or the immediate eflfect of Pollen in Maize. Bull. U.S. Dept. Agric, 



Div. Bot., Washington (D.C.), No. 22, 1900. 



3587. Work of the United States Department of Agriculture on Plant Hybridisation. 



J. R. Hort. Soc, London, xxiv, 1900, pp. 128-45. 



3588. Spermatogenesis and fecundation of Zamia. Bull. U.S. Dept. Agric, Bur. 



Plant Indust., No. 2, 1901, pp. i-ioo. — Ab. : Bot. Centralbl., Cassel, Ixxxix, 

 1902, pp. 295-6. 

 See also under Swingle, Walter T. 



3589. Weberbauer, A. Rhamnaceae. Engler und Prantl, d. nat. Pflanzenfam. Ill, 5, 



pp. 396-7. — Ab. : Justs bot. Jahresber., Leipzig, xxiii, (1895) 1897, p. 109. 



3590. Webster, A. D. On the growth and fertilisation of Cypripedium Calceolus. 



Trans. Bot. Soc, Edinburgh, xvi, 1886, pp. 357-60. 



3591. Fertilisation of Arum crinitum. Gard. Chron., London, New Ser., xxiv, 1885, 



P- 439- 



3592. On the fertilisation of Epipactis latifolia. Trans. Bot. Soc, Edinburgh, xvi, 



1886, pp. 347-52 ; Bot. Gaz., Chicago (111.), xii, 1887, pp. 104-9. 



3593. Change of colour in the flowers of Anemone nemorosa. J. Bot., London, xxv, 



1887, p. 84. 



8594. Webster, r.M. Protective Value of Motion. [Visits of Alaria florida to Oenothera 

 biennis.] J. Ent. Soc, New York, v, 1897, pp. 67-77. — Ab. : Amer. Nat., 

 Boston (Mass.), xxxi, 1897, pp. 814-6. 



3595. Webster, J. K. Cleistogamy in Linaria canadensis. Rhodora, Boston (Mass.), ii, 

 1900, pp. 168-9. 



