Abstract
Data from chromosome numbers and from morphological variation in wild plants and artificial hybrids further support the hypothesis thatLysimachia Xproducta is of hybrid origin and the taxonomic judgment that it is best treated at the status of interspecific hybrid rather than as a species of hybrid origin. Additional distribution data are presented.
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Cooperrider, T. S. &B. L. Brocken 1975. IOPB Chromosome number reports XLIX. Taxon24: 513.
Cooperrider, T. S. &B. L. Brocken 1974. The nature and status ofLysimachia Xproducta (Primulaceae). Brittonia26: 119–128.
Cooperrider, T. S. &B. L. Brocken &G. A. McCready 1970. Chromosome numbers inChelone (Scrophulariaceae). Brittonia 22: 175–183.
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Ray, J. D. Jr., 1956. The genusLysimachia in the New World. Urbana: University of Illinois Press.
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Cooperrider, T.S., Brockett, B.L. The nature and status of Lysimachia X producta (Primulaceae)—II. Brittonia 28, 76–80 (1976). https://doi.org/10.2307/2805560
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DOI: https://doi.org/10.2307/2805560