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Orange, Trifoliate

Rutaceae Poncirus trifoliata (L.) Raf.

Source: Magness et al. 1971

The genus Poncirus is closely related to citrus, but the small, thorny trees are deciduous. Trees are hardier than citrus, in mid-winter enduring temperatures to near 0F. Fruits are globose, up to 1.5 inches in diameter, and very acid and bitter. Poncirus will hybridize with citrus, and such hybrids bave been made in efforts to increase hardiness in edible citrus fruits. Poneirus seedlings are used as root stocks for citrus, particularly for Mandarin oranges. Hybrids of Poncirus with sweet orange, called citranges, are now widely used as stocks.

Poncirus is grown as an ornamental dooryard tree in areas too cold for citrus, and occasional trees may be maintained by nurserymen as seed sources. Fruit appears valueless in the U.S., but may be used for flavoring or marmalade in other countries.

Season, bloom to maturity: 8 to 10 months.

Production in U.S.: No data. None commercial.

Use: Fruit not utilized in U.S.

Part of fruit consumed: None

Last update February 18, 1999 by ch