1911 Encyclopædia Britannica, Volume 17… (1911)
“ The “marmalade-tree” (Lucuma mammosa) bears a fruit whose thick pulp resembles marmalade and is called natural marmalade. “Marmalade box” is the name of the fruit of the Genipa Americana, which opens in the same manner as a walnut, the nut being replaced by a soft pulp. ”
