Citrus medica L.
Received as seed from Professor Tsuin Shen, Peking Agriculture University, Peking, China, 1980.
From China. Parents unknown.
Rootstock of accession
Yuma Ponderosa lemon
Season of ripeness in Riverside
November to January
Notes and Observations
12/22/1987, EMN: Suspected as a new variety based on a letter from Tsuin to Reuther in 1980. Most fruits are small to medium in size but some older fruits are large; this appears to be a typical-type fruit; elongate with a blunt nose and medium yellow rind. Rind smooth on small fruits but bumpy and furrowed on large fruits. Moderately thick rind, light yellow flesh, sour, seedless.
12/5/2006, DK & TS: Small to medium in size; pear-shaped; seedless; thin-medium rind; juicy, fruity, very tart. Fruit is very fragrant. Tree medium in size; lots of red in young foliage. From China.
4/10/2017, TS & KT: Citrons typically have separate male or female flowers on the same tree, but Yunnanese citron flowers never produce anthers and/or pollen, and are even known to produce flowers that are not only without anthers but without any female parts either.
Not commercially available in California.
Gmitter, F.G. Jr. : Hu, X. The possible role of Yunnan, China, in the origin of contemporary Citrus species (Rutaceae). Economic Botany, Apr-Jun 1990, v. 44(2) p. 267-277.