46 BOTANICAL GAZETTE [JULY 
Stages in the life history are found’ not to correspond to definite 
seasons, and a long time elapses between pollination and fertilization. 
OTANICAL LABORATORY 
SouTH AFRICAN COLLEGE, CAPE TOWN 
Postscript (March 26, 1910).—Wall formation in the prothallus 
of ovules pollinated about January, 1909, is now taking place. Fer- 
tilization is likely to follow in the course of a few days. It may there- 
fore be stated that an interval of fourteen or fifteen months will elapse, 
in this instance, between pollination and fertilization. 
LITERATURE CITED? 
1. CaRoTHERS, I. E., Development of ovule and female gametophyte in Ginkgo 
biloba. Bort. GAZETTE 43:116-130. pls. 5,6. 1907 
. Counter, J. M., and CHAMBERLAIN, C. J., Morphology of spermatophytes. 
Part I. New York. 1901. 
3. Hit, T. G., and Frarne, E. pe, The seedling structure of gymnosperms. 
I. Annals of Botany 22: elie pl. 35. figs. 1-8. 1908; II. Annals of 
Botany 23:189-227. pl. 15. 
. Lawson, A. A., The Ate fertilization, and embryo of Cryp- 
tomeria japonica. Annals of Botany 18: 417-444. pls. 27-30. 1904. 
, The gametophytes and embryo of the Cupressineae, with special 
reference to Libocedrus decurrens. Annals of Botany 21:281-301. pls. 24- 
20. 1007. => : 
LientER, O., Vegetaux fossiles de Normandie. Structure et affinities du 
Bennettites Morieri Sap. et Mar. Mém. Soc. Linn. Normandie 18:5-78. 
pls. 1-6. 1894. 
. Masters, M. T., Notes on the genera of Taxaceae and Coniferae. Joum. 
Linn. Soc. 30:1-42. 1893. 
Morris, H. S., Note on an abnormal seedling of Widdringtonia cupressoides 
and a brief account of the vascular system of the normal seedling. Phil. 
Trans. Roy. soc. S.A. 1: 411, 412. jigs. I, 2. 1909 
Orttey, A. M., The development of the gametophytes and fertilization in 
Juniperus communis and Juniperus virginiana. Bot. GAZETTE 48:31-49- 
pls. I-4. 1909. 
Saxton, W. T., Preliminary account of the ovule, gametophytes, and embryo 
of Widdringtonia_cupressoides. Bot. GAZETTE 48:161-178. pl. 11. figs. I-3- 
1909. 
7A considerable number of papers bearing on the subject were quoted in my 
former paper. It is not necessary to repeat the titles here, only those actually cited 
in the text being given. 
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