Karyological notes onCentaurea sect.Acrocentron (Asteraceae) |
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| Authors: | Núria Garcia Jacas Alfonso Susanna de la Serna |
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| Institution: | (1) Botanic Institute of Barcelona, Avgda. Muntanyans, s/n., 08038 Barcelona, Spain |
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| Abstract: | The karyology ofCentaurea sect.Acrocentron is surveyed. 19 chromosome counts on 8 species are reported; those onC. acaulis, C. crocata, C. galianoi, C. pubescens, andC. malinvaldiana are new. The basic chromosome numbers of the section are x = 11 and x = 10. Karyological arguments have been used to show that evolution was from x = 11 to x = 10. This is supported by biogeographical data. Two main centres of diversification of sect.Acrocentron were studied from that point of view: the East and the Southwest Mediterranean region. |
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| Keywords: | Angiosperms Asteraceae Centaurea Acrocentron Karyology biogeography |
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