This inference was supported by variation patterns at microsatellite loci. The occurrence of mixed ploidy levels and stylar polymorphism in the introduced range is consistent with multiple introductions to the Western Mediterranean. Invasive populations of the pentaploid exhibited dramatically reduced levels of diversity but were not genetically uniform. There was clear genetic differentiation between ploidy levels, but sexual populations from both regions were not significantly different in levels of diversity. Perfectly all right in small quantities, the leaves should not be eaten in large amounts since oxalic acid can bind up the bodys supply of calcium leading to nutritional deficiency. Introduced populations were composed mainly of pentaploids, but sexual tetraploids were also found. Medicinal use of Bermuda Buttercup: None known Known hazards of Oxalis pes-caprae: The leaves contain oxalic acid, which gives them their sharp flavour. Flow cytometry confirmed earlier reports of diploids and tetraploids in the native range, with a single population containing pentaploid individuals. There is only a single known variant of the Sicilian Buttercup and only one that is recognized by poultry registries and groups around the world. They lay a similar number of eggs, although they are obviously smaller. We examined morph ratios, ploidy level, reproductive mode and genetic diversity at nuclear microsatellite loci in 10 and 12 populations from South Africa and the Western Mediterranean region, respectively. The Sicilian Buttercup is considered a light breed and is quite rare, but even lighter and rarer is the bantam variant. Invasive populations throughout much of the introduced range are composed of a sterile clonal pentaploid short-styled form. This species is a tristylous geophyte native to South Africa. Here, we compare genetic variation in native and introduced populations of the clonal plant Oxalis pes-caprae to investigate the influence of reproductive mode and ploidy on levels of diversity. Genetic diversity in populations of invasive species is influenced by a variety of factors including reproductive systems, ploidy level, stochastic forces associated with colonization and multiple introductions followed by admixture.
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