VOLUME L NUMBER 5 
BOTANICAL GAZETTE 
NOVEMBER 1910 
THE PEG OF THE CUCURBITACEAE 
CONTRIBUTIONS FROM THE HULL BOTANICAL LABORATORY I40 
WittrtaAm Crocker, Lee I. Knicut, AND EpitH ROBERTS 
(WITH SIX FIGURES) 
Historical 
The peg of seedling Cucurbitaceae has frequently been used 
as a marked case of adaptation to a peculiar function. It holds 
the seed coat while the elongating arms of the arch of the hypocotyl 
\ 
Fic. 1.—Big Tom, showing the pegs functioning in the removal of the coats. 
withdraw the cotyledons from the coat. The method by which 
the peg functions is well shown in fig. I. 
227 
