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
- Grapefruit - From the New Crop Resource Online Program at Purdue University.
- When is Grapefruit in Season? - Grapefruit facts and recipes from SNAP-Ed Connection
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.