Abstract
SUMMARYObservations are made on the meiotic behaviour and morphology of the somatic chromosomes in Microsorium punctatum (L.) Copel, and M. membranaceum (Don.) Ching. Both species show n = 36 and 2 n = 72.Meiosis is more or less regular. The somatic chromosomes have close range of variation in length (2.9–6.6 μ in M. punctatum and 2.9–6.0 μ, in M. membranaceum) and most chromosomes have subterminal centromeres. In M. punctatum, there is only one chromosome with nearly median centromere whereas the other species has two pairs with submedian centromeres.
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