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World of CitrusWorld of CitrusTrimble Tangerine
Herbert J. Webber and Walter T. Swingle · U.S. Department of Agriculture · 1905 (reprint from the Yearbook of the Department of Agriculture for 1904)
https://archive.org/details/newcitruscreatio00webb (opens in a new tab)
Trimble account, printed pp. 238–240. The reprint states a Dancy tangerine × Parson Brown orange pollen cross produced at W. K. Trimble’s Braidentown grove; it also cautions that adventive-embryo origin could not be ruled out (p. 240). A matching digitized reprint PDF was used to read the passage: https://upload.wikimedia.org/wikipedia/commons/f/f4/New_citrus_creations_of_the_Department_of_agriculture_%28IA_newcitruscreatio00webb%29.pdf. The other supplied Archive.org URL is a duplicate scan of the same chapter.
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University of California, Riverside Citrus Variety Collection · Page reproduces text from The Citrus Industry, Vol. 1 (1967)
https://citrusvariety.ucr.edu/crc3026 (opens in a new tab)
Under “Description from The Citrus Industry Vol. 1 (1967),” UCR says Trimble and Weshart are now regarded as nucellar seedlings of Dancy rather than new varieties. This is an attributed retrospective account, not a molecular test.
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