476 Fraser and Welsford. — Further Contributions to the 
List of Papers. 
1. Blackman, V. H., and Fraser, H. C. I. (’05): Fertilization in Sphaerotheca. Ann. Bot., 
xix, h. 567. 
2. — — — — (’06) : On the Sexuality and Development of the 
Ascocarp in Humaria granulata. Quel. Proc. Roy. Soc., London, B. Ixxvii, p. 354. 
3. Brefeld, O. (’72 et seq.) : Untersuchungen aus dem Gesammtgebiete der Mykologie. Leipzig. 
4. Bulliard (1791) : Histoire des Champignons de France, p. 12. 
5. Claussen, P. (’05) : Zur Entwicklungsgeschichte der Ascomyceten : Boudiera. Bot. Zeit., 
Ixiii, p. 1. 
6. (’07) : ZurKenntnis der Kernverhaltnisse von Pyronema confiuens. Ber. d. Dent. 
Bot. Gesell., xxv, p. 586. 
7. Dangeard, P. (’94-5) : La Reproduction sexuelle des Ascomycetes. Le Botaniste, iv, p. 21. 
8. De Bary, A. (’63) : Ueber die Fruchtentwicklung der Ascomyceten. Leipzig. 
9. Farmer, J. B., and Moore, J. E. S. (’05) : On the Meiotic Phase (Reducing Division) in 
Animals and Plants. Q. J. M. S., 192, p. 489. 
10. Farmer, J. B., and Digby, L. ('07) : Studies in Apospory and Apogamy in Ferns. Ann. Bot. 
11. Faull, J. H. (’05). Development of the Ascus and Spore Formation in Ascomycetes. Proc. 
Boston Soc. Nat. Hist, xxxii, p. 77. 
12. Fraser, H. C. I. (’07) : On the Sexuality and Development of the Ascocarp in Lachnea stercorea. 
Ann. Bot. xxi, p. 349. 
13. — (’08): Contributions to the Cytology of Humaria rutilans. Ann. Bot., xxii, 
P* 35- 
14. Guillermond, M. A. (’05) : Remarques sur la karyokinese des Ascomycetes. Ann. Mycol., 
iii, p. 344. 
15. Harper, R. A. (’95) : Beitrage zur Kenntnis der Kernteilung und Sporenbildung im Ascus. 
Ber d. Deutsch. Bot. Gesell., xiii, p. 67. 
16. (’95): Entwicklung des Peritheciums bei Sphaerotheca castagnei. Ber. d. 
Deutsch. Bot. Gesell., xiii, p. 475. 
17. (’96) : Ueber das Verhalten der Kerne bei der Fruchtentwickelung einiger 
Ascomyceten. Jahrb. f. wiss. Bot., xxix, p. 656. 
18. (’00) : Sexual Reproduction in Pyronema conjiuens and the morphology of the 
Ascocarp. Ann. Bot. xiv, p. 321. 
19. (’05) : Sexual Reproduction and the Organization of the Nucleus in certain 
Mildews. Publ. Carnegie Inst., Washington, No. 3 7, p. 1. 
20. Maire, R. (’05) : Recherches cytologiques sur quelques Ascomycetes. Ann. Mycol., iii, p. 123. 
21. Moore, J. E. S., and Embleton, A. (’06) : ‘ On Synapsis in Amphibia.’ Proc. Roy. Soc. B., 
vol. Ixxvii, p. 555. 
22. Welsford, E. J. (’07) : Fertilization in Ascobohts furfnraceus. New Phyt., vi, p. 136. 
EXPLANATION OF PLATES XXVI AND XXVII. 
Illustrating Dr. Fraser and Miss Welsford’s paper on the Cytology of the Ascomycetes. 
Figs. 1-20, Otidea aurantia. 
Fig. 1. Section through ascogonium. x 950. 
FIRST DIVISION. 
Fig. 2. Two nuclei in the ascus, showing first meiotic contraction, x 2800. 
Fig. 3* Fusion nucleus with longitudinally split spireme, x 2800. 
Fig. 4. Synaptic contraction, x 2800. 
Fig. 5. Nucleus passing out of synapsis ; four loops are apparent and show longitudinal 
fission, x 2800. 
