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Natural hybridization within the genus Callitriche (Callitrichaceae) in Sweden
Author(s) -
Martinsson K.
Publication year - 1991
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/j.1756-1051.1991.tb01814.x
Subject(s) - herbarium , biology , hybrid , botany , genus
Natural hybridization within the genus Callitriche in Sweden was studied on the basis of herbarium material and field studies. One triploid (2n = 15) hybriditaxon is locally common in Scania, S Sweden, where it is shown to be longlived and to disperse vegetatively to form large clones. The triploid and its derivatives are described as a nothospecies under the name of Callitriche × vigens. Its characteristics, parentage and affinities to Central European hybrids is discussed. As putative parent species, C. platycarpa (2n = 20) and C. cophocarpa (2n = 10) are indicated. The hybrid between C. platycarpa and C. hamulata (2n = 29) and a putative hybrid between C. platycarpa and C. stagnalis were only encountered once each and believed to be shortlived.