134 BOTANICAL GAZETTE [FEBRUARY 
nucleus, the cytoplasm, and cilia which have received material for 
their growth from the blepharoplast and probably also from the 
material surrounding it. 7 
11. The amount of chromatin in the nucleus is small. There 
is no nucleolus present unless the masses of chromatin which are 
found in nuclei which are undergoing repeated division be inter- 
preted as nucleoli. 
12. The number of chromosomes is four for the gametophyte 
and eight for the sporophyte. 
13. The cytoplasm of the spore mother-cells appears to be a 
fine reticulum, in which are numerous granules usually located at 
the point of intersection of the fibres of the reticulum. 
14. The mature spore contains a large quantity of oil together 
with a small amount of granular matter. The nucleus of the spore 
is very small. 
In conclusion I wish to thank Professor Gro. F. ATKINSON and 
Dr. E. J. Duranp for valuable advice and assistance during the 
progress of this study. 
LITERATURE CITED. 
1. BrLAjJEFF, Ueber Bau und Entwickelung der Antherozoiden. Heft I, 
Characeen. 1892 (Russian). German translation, Flora '79:1-48. 1894. 
2. BiscHorr, Bemerkungen iiber die Lebermoose vorzuglich aus den Gruppen 
der Marchantieen und Riccieen. Nova Acta Acad. Caes. Leop. Carol. 
Nat. Am. 17:part 0. 1835. 
3- CAMPBELL, D. H., The structure and development of mosses and ferns. 
jigs. 1-7. New York. 1895. 
, Zur Entwickelungsgeschichte der Spermatozoiden. Ber. Deutsch. 
Bot. Gesells. 5:120-127. pl. 6. 1887. 
5. Davis, B. M., Nuclear studies in Pellia. Annals of Botany 9:147-180. 
pls. To-II. 1805. 
6. Farmer, J. B., On spore formation and nuclear division in the Hepaticae. 
Annals of Botany 9: 469-523. pls. 16-18. 1895. 
7. , The quadripolar spindle in the spore mother-cell of Pellia epiphylla. 
Annals of Botany 15: 431-433. Igol. 
8. ———,, On the interpretation of the quadripolar spindle in the Hepaticae. 
Bot. GAZETTE 3'7:63-65. 1903. 
9. ——— and Moorg, J. E. S., On the maiotic phase (reduction divisions) in 
animals and plants. Quart. Jour. Mic. Sci. 48:489-557. pls. 34-41. 
1905. - 
