Two Embryo-Sacs in Fritillaria. 257 
Mee who has obtained the photomicrographs reproduced as Text- 
figures 18 a and 18 b. 
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1904. 
TWO EMBRYO-SAC MOTHER-CELLS IN THE OVULE 
OF FRITILLARIA. 
[Text-Fig. 19]. 
W HILE engaged with the sorting and arrangement of the 
collection of slides illustrating nuclear division in the Botanical 
Department of the University of Bristol I found one slide of 
Fritillaria messanensis showing the presence of two embryo-sacs 
in one ovule. 
As cases showing this condition are comparatively rare in 
Monocotyledons it was thought worthy of notice. 
Reference has already been made to a similar condition in 
Lilium longiflormn by Miss Margaret C. Ferguson 1 . In her note 
she describes as the earliest case mentioned the observation of 
Guignard 2 on Ornithogalum pyrenaicwn where two archesporial 
1 Ferguson, Margaret C. “Two embryo-sac mother-cells in 
Lilium longiflorum .’’ Bot. Gaz. 43, 1907, p. 418. 
2 Guignard, L. “ Rechcrches sur le sac embryonnaire des 
Phanerogames Angiospermcs.” Ann. Sci. Nat. Bot. ser. VI. 
t. 13, 1882, p. 136. 
