Abstract
S. cilicica Siehe andS. morrisii Meikle are two little known sibling species of theScilla siberica alliance with previously difficult taxonomy, especially with regard to specific delimitation and geographic distribution. Quantitative C-band karyotyping and DNA content determinations were performed in four provenances, including the type localities. Both species (2n = 12) differ strikingly in their banding patterns despite of similar DNA content. Karyotype diversification involved changes in eu- and heterochromatin quantities and resulted in some changes of chromosome form. Despite this, actual phylogenetic relatedness is indicated by a chromosomal marker (NOR-position) of rare occurrence in the alliance. Karyological results and circumstantial evidence from the literature suggest thatS. morrisii is an endemic, exclusive to Cyprus as a member of theS. siberica alliance.S. cilicica seems to be restricted to continental S. Anatolia opposite to Cyprus. Its occurrence on Cyprus is questionable.
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