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Citrangequat is a cross between citrange and kumquat. Citrange is a
cross between sweet orange and trifoliate orange. The bitterness comes
from the trifoliate orange, which is one of the three contributors to the
genetic makeup of this plant. When fully ripe, the Thomasville
Citrangequat is considered one of the best cold hardy citrus. Most of the
other cold hardy citrus are considered barely edible due bitterness and extreme
sourness. Here is an interesting quote I found on-line
CITRANGEQUAT (Fortunella sp. X
citrange). The first crosses were made by Dr. Swingle at Eustis, Florida, in
1909. Tree is vigorous, erect, thorny or thornless, with mostly trifoliolate
leaves; highly cold-resistant. Fruit resembles the oval kumquat, mostly very
acid. One cultivar, 'Thomasville', becomes edible when fully mature, though it
is relatively seedy. It is very juicy, valued for eating out-of-hand, for ade
and marmalade. The tree is strongly resistant to citrus canker and is very
ornamental. Two other cultivars, 'Swinton' and 'Telfair', have few seeds, but
are less desirable; have limited use for juice and as ornamentals.
-Mark
Lee, Seattle, z7
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