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The hybrid origin of the western Mediterranean orchid Dactylorhiza insularis was demonstrated by genetic markers. Allozyme data showed that throughout its range D. insularis has an allotriploid constitution and reproduces apomictically. The parental species of D. insularis were identified as D. romana and D. sambucina; they contributed 2 alleles and 1 allele, respectively, at the allozyme loci studied...
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