Citrus medica L.
Photos by David Karp, CVC, 11/7/2006. Photo rights.
Source: Received as budwood from John Carpenter, USDA Date & Citrus Station, Indio, California, 1966. Open pollinated seedling.
Parentage/origins: Parents unknown.
Rootstock of accession: Citrus macrophylla, Yuma Ponderosa lemon
Season of ripeness at Riverside: November to January
Notes and observations:
12/2/1987, EMN: Fruit examined and matched description in The Citrus Industry quite well.
11/7/2006, DK: Diamante is still the principal citron variety grown in Italy. It has a very thick rind, firm, fleshy albedo, and acid flesh.
Description from The Citrus Industry Vol. 1 (1967):
"Fruit large, long-oval to ellipsoid; basal cavity furrowed and surrounded by low collar; apex broadly nippled; and seedy. Color lemon-yellow at maturity. Rind very thick and fleshy; surface smooth and sometimes indistinctly lobed or ribbed. Flesh crisp; lacking in juice, but acid, like lemon.
Availabilty: Not commercially available in California.
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