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World of CitrusWorld of CitrusColman Citrange
Herbert J. Webber · United States Department of Agriculture, Bureau of Plant Industry, Seed and Plant Introduction and Distribution · 1907-04-18
https://archive.org/details/CAT31443114 (opens in a new tab)
USDA circular issued April 18, 1907; the document text is dated March 2, 1907. Webber's Colman-specific origin/description section identifies Trifoliate orange as mother and common orange as father and describes fruit, tree, uses, limited hardiness observations, and trees distributed on Trifoliate stocks. The source gives no cross year or accession. Hardiness is expressly described as not thoroughly tested; the northern Florida 15–18°F statement is a young-tree observation with no duration. OCR dimensions were not verified from page images and are not used as measurements. The historical health claim about bitterness is excluded.
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W. C. Cooper; P. C. Reece; J. R. Furr · Proceedings of the Florida State Horticultural Society · 1962
https://journals.flvc.org/fshs/article/view/100828 (opens in a new tab)
Vol. 75 (1962), printed p. 7, “Citranges and Related Hybrids.” The retrospective groups Coleman with citranges grown from Poncirus trifoliata seed crossed with Ruby sweet-orange pollen, citing Swingle (1913). Text was read in a complete third-party transcription (https://www.scribd.com/document/774779303/3); the official article landing page verifies the article metadata, but the official PDF returned access denied. The original 1913 source was not independently inspected. This group-level statement supports the reported parent roles for Coleman; the following sentence separately describes Rusk as the reciprocal cross.
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