408 BOTANICAL GAZETTE [DECEMBER 
cupule is less than the transverse diameter, as shown by figs. 12 and 
13, which represent respectively longitudinal and transverse sections 
through cupules of about the same age. 
le of Lunu- 
Jongated an 
ve 13.—Transverse section of a Fic. 14.—Origin of is ok 
cupule a ia; poet 
p bout the same age as fig. 12. roe een (o) cea only on pos 
terior margin; J, young air peal 
It is not necessary to follow the history of the cupule further, for 
it is a familiar object in all laboratories of instruction and has been 
well described. i 
The cupule of Lunularia has also been investigated — 
to show that its origin is essentially the same as that of esr 
(fig. 14), except that the development of the rim takes P “— ad 
on the posterior side of the gemmiparous region, which is als i 
more extensive. In some cases, late in development, @ slight anterior 
