Most botanists agree that the grapefruit is a cross between a
pummelo (see http://www.floridata.com/Plants/Rutaceae/Citrus%20maxima/1069)
and a sweet orange (see http://www.floridata.com/Plants/Rutaceae/Citrus%20sinensis/647).
Grapefruit, like all citrus fruit, is a Hesperidum, or a large
modified berry with a thick rind.
If you see grapefruit growing on a tree, you will notice that
they grow in clusters. It is suggested that these clusters resemble
the shape of large yellow grapes and so the fruit was called a
grapefruit. Another explanation is that the premature grapefruit
looks similar in shape to unripe green grapes.
about Citrus Fruits and Juices: Grapefruit - This
PDF document from the Cooperative Extension Service,
University of Florida, Institute of Food and Agricultural
Sciences (UF/IFAS) provides a description of
grapefruit and its varieties, tips, storage, health
benefits, and suggestions for incorporating grapefruit
juice into a healthy diet. A brief summary addressing
grapefruit juice/drug interactions is included. (PDF, 712 KB)
- Grapefruit -
EDIS (Electronic Data Information
Source) at the University of Florida, provides information
on the history, distribution, description, and cultivars
Leslie, and Violet Stevenson. Grapefruit. In The
complete book of fruit. London, Angus and Robertson
Publishers, 1979. p. 148-150.
J.R. How fruit came to America. National geographic
magazine, v. 100, Sept. 1951: 327-377. (Discussion
of grapefruit is on p. 354-355)
Julia Frances. Grapefruit. In Fruits of warm climates. Miami,
FL, J. F. Morton, c1987. p. 152-158.
Walton B. The grapefruit: its composition, physiology,
and products. Berkeley, University of California,
Division of Agricultural Sciences, 1972. 660 p.
Samuel. Hesperides; a history of the culture and
use of citrus fruits. London, J. Bale, Sons & Curnow,
1938. 371 p.
more print resources...
Search on "grapefruit" and "citrus
in the Library of Congress Online
Grapefruit and grapefruit juice. From the USDA’s Choose My Plate website.
Grapefruit clusters. Prints & Photographs Division, Library
A beneficiary of the Red Cross drought relief
work in Mississippi, c. 1930. Prints & Photographs Division,
Library of Congress.