EMBRYO DEVELOPMENT AND POLYEMBRYONY 
15. Eames, A. J. The morphology of Agathis australis. Annals of Botany 27: 1-38. 
pis. 1-4. 1913. 
16. Engler, A., and Gilg, E. Syllabus der Pflanzenfamilien. Berlin, 1912. 
17. Hofmeister, W. Higher cryptogamia and fructification of the Coniferae. Translation, 
Ray Society, London, 1862. 
18. Jager, L. Beitrage zur Kenntniss der Endospermbildung und zur Embryologie von 
Taxus baccata. Flora 86: 241-288. pis. 15-19. 1899. 
19. Jeffrey, E. C. The comparative anatomy of Coniferales II. The Abietineae. Mem. 
Boston Soc. Nat. Hist. 6: 1-37. pis. 1-7. 1904. 
20. . The anatomy of woody plants. Chicago, 191 7. 
21. Land, W. J. G. A morphological study of Thuja. Bot. Gaz. 34: 249-259. pis. 6-8. 
1902. 
22. . Fertilization and embryogeny in Ephedra trifurca. Bot. Gaz. 44: 273-292. 
pis. 20-22. 1907. 
23. Lawson, A. A. The gametophyte, archegonia, fertilization, and embryo of Sequoia 
sempervirens. Annals of Botany 18: 1-28. pis. 1-4. 1904. 
24. . The gametophyte, fertilization and embryo of Cryptomeria japonica. Annals 
of Botany 18: 417-444. pis. 27-30. 1904. 
25. . The gametophytes, fertilization, and embryo of Cephalotaxus drupacea. Annals 
of Botany 21: 1-23. pis. 1-4. 1907. 
26. . The gametophytes and embryo of the Cupressineae with special reference to 
Lihocedrus decurrens. Annals of Botany 21 : 281-301. pis. 24-26. 1907. 
27. . The gametophytes and embryo of Sciadopitys verticillata. Annals of Botany 
24: 403-421. pis. 29-31. 19 10. 
28. Miyake, K. The development of the gametophytes and embryogeny of Cunninghamia 
sinensis. Beih. Bot. Centralbl. 27: 1-25. pis. 1-5, figs. 2. 1910. 
29. , and Yasui, K. On the gametophytes and embryo of Pseudolarix. Annals of 
Botany 25: 639-647. pi. 48. 1911. 
30. Nichols, G. E. A morphological study of Juniperus communis var. depressa. Beih. 
Bot. Centralbl. 25: 201-241. pis. 8-17, figs. 4. 1910. 
31. Noren, C. O. Zur Entwickelungsgeschichte des Juniperus communis. Upsala 
Universitets Arsskrift 1907. pp. 64. pis. 4. 
32. Saxton, W. T. Preliminary account of the development of the ovule, gametophytes, 
and embryo of Widderingtonia cupressoides Endl. Bot. Gaz. 48: 161-178. pi. 11, 
figs. 3. 1909. 
33. . Contributions to the life history of Widderingtonia cupressoides. Bot. Gaz. 50: 
30-48. pis. 1-3. 1910. 
34. . Contributions to the life history of Callitris. Annals of Botany 24: 557-569. 
pis. 45, 46. 1910. 
35. . Contributions to the life history of Actinostrohus pyramidalis, Miq. Annals of 
Botany 27: 321-345. pis. 25-28. 1913. 
36. . Contributions to the life history of Tetraclinis articulata Masters, with some 
notes on the phylogeny of the Cupressineae and Callitroideae. Annals of Botany 
27: 577-603. pis. 44-46, figs. 9. 1913. 
37. . The classification of conifers. New Phytologist 12: 242-262. fig. i. 1913. 
38. Shaw, W. R. Contribution to the life history of Sequoia. Bot. Gaz. 21: 332-339. 
pi. 24. 1896. 
39. Sinnott, E. W. The morphology of the reproductive structures of the Podocarpineae. 
Annals of Botany 27: 39-82. pis. 5-9, figs. 9. 1913. 
40. Strasburger, E. Die Coniferen und die Gnetaceen. Jena, 1872. 
41. . Die Angiospermen und die Gymnospermen. Jena, 1897. 
