58 BOTANICAL GAZETTE (ony 
LITERATURE CITED ‘ 
1. Farmer, J. B., and Dicsy, L., Studies in apospory and apogamy in ferns. — 
Annals of Botany 21: 161-199. pls. 16-20. 1907. 7 
. Lanc, W. H., On apogamy and the development of sporangia upon fern 
prothallia. Phil. Trans. Roy. Soc. London B 190: 189-238. pls. 7-11. 1898. 
3. SHaw, W. R., Parthenogenesis in Marsilea. Bot. GAZETTE 24:114-117. 
1897. 3 
Smit, R. W., The achromatic spindle in the spore mother cells of Osmunda _ 
regalis. Bot. GAZETTE 30: 361-377. pl. 1. 1900. : q 
. STRASBURGER, E., Apogamy bei Marsilea. Flora 97:123-191. pls. 3-8. 1907. 
: , Ueber Reductionstheilung, Spindelbildung, Centrosomen, und Cilien- — 
bildung im Pflanzenreich. Jena. 1900. “ 
. Yamanoucut, S., Apogamy in Nephrodium. Bot. GazETTE 45: 289-318. 
pls. 9, To. 1908. 
8. ———,, Chromosomes in Osmunda. Bort. GAZETTE 49:1-12. pl. I. 1910. 
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