Citrus medica L.
Photos by David Karp, CVC, 12/5/2006. Photo rights.
Source: Received from Walter T. Swingle, USDA, 1924.
Parentage/Origins: Parents unknown.
Rootstock of accession: Yuma Ponderosa lemon
Season of ripeness at Riverside: November to January
Notes and observations:
1985, EMN: This accession is chronologically out of order because it was not given a CRC number until about 1927. Corsican citron is said to be the same as the Citron of Commerce.
12/22/1987, EMN: This appears to be true a Corsican citron or close to it. Fruit matches The Citrus Industry description quite well, and it is sweet like it is supposed to be.
12/5/2006, DK & TS: Blocky, oval shape is typical, though some have acorn shape. Thick, firm rind is sweet, but has some bitterness; flesh is seedy, acidless.
Description from The Citrus Industry Vol. 1 (1967):
"Fruit large, ellipsoid to very slightly obovate; basal area slightly depressed and radially furrowed; apical nipple suppressed or indistinct (less prominent than in Diamante); seedy. Color lemon-yellow. Rind very thick and fleshy; surface rather rough, bumpy, and commonly somewhat ribbed. Flesh crisp and solid; lacking in juice; flavor sweet (without acid).
Availability: Not commercially available in California.
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