Paraguay bittersweet sour orange
Apepu sour orange
Citrus aurantium L.
Photos by David Karp, CVC, 3/3/2008. Photo rights.
Source: Received as seed from C.F. Mead via USDA, Plant Introduction Station, Chico Garden, 1915
Parentage/origins: Parents unknown. From Villa Encarnarcion, Asuncion, Paraguay, 1911.
Rootstocks of accession: Carrizo citrange, C-35 citange
Season of ripeness at Riverside: January to March
Notes and observations:
2/24/1988, EMN: An unusually resistant native wild orange with large fruit, neither sweet nor sour, very thick skin, which is used for preserves. Well named as bittersweet. Not as sour as Brazilian sour orange but certainly couldn't masquerade as a sweet orange either. Other than less bitterness, this fruit is much like a typical sour orange.
2/11/2008 OJB, TS & DK: Looks similar to standard sour oranges, but sweeter, has a pleasant sweet-tart flavor.
Description from The Citrus Industry Vol. 1 (1967):
The bittersweet orange group, which contains at least two varieties, may be regarded as a subgroup of the common bitter orange, from which it differs mainly in lower acidity and better flavor.
Availability: Not commercially available in California.
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