The karyology of some neotropicalStyracaceae |
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Authors: | W Morawetz |
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Institution: | (1) Institut für Botanik und Botanischer Garten, Universität Wien, Rennweg 14, A-1030 Wien, Austria |
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Abstract: | Chromosome numbers and karyomorphological characters have been investigated inPamphilia andStyrax (Styracaceae). Counted for the first time in the genus, two species ofPamphilia were found to have 2n = 16. The twoStyrax spp. investigated share withPamphilia the same chromosome number, a peculiar condensation behaviour of the chromosomes (Fig. 1a–c) and the same type of semi-reticulate interphase nucleus, results which indicate a close relationship of the two genera. The base number inStyracaceae is probably x = 8 (2n = 2x = 16) with stabilized triploids inHalesia andPterostyrax (2n = 3x = 24). A preliminary comparison withSapotaceae andEbenaceae does not allow a general karyological characterisation of the orderEbenales. |
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Keywords: | Angiosperms Styracaceae Styrax Pamphilia Karyology chromosomes evolution and systematics in tropical woody plants |
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