Abstract
In this contribution new chromosome numbers for Italian endemic taxa are presented. It includes 13 chromosome counts for Ornithogalum (Asparagaceae), Anthemis, Carduus, Centaurea, Cirsium, Hieracium, Taraxacum (Asteraceae), Asyneuma (Campanulaceae), Knautia (Caprifoliaceae), Gypsophila (Caryophyllaceae), Linum (Linaceae), Helleborus (Ranunculaceae).
Highlights
The chromosome number found is consistent with all the other existing counts reported for the Italian populations belonging to species in the Linum perenne group (Bedini et al 2010 onwards)
This subspecies is endemic to southern Italy (Apulia, Basilicata, Calabria, and Sicily; Peruzzi et al 2014), whereas the species is distributed in Turkey with G. arrostii Guss. subsp. nebulosa (Boiss. & Heldr.) Greuter & Burdet (Marhold 2011)
Two other counts are known for this taxon, one for Abruzzo (2n = 20; see Peruzzi et al 2013) and one for Calabria (2n = 40; see Ehrendorfer 1975), the latter corresponding to the same chromosome number found by us and showing a tetraploid asset
Summary
Linum katiae occurs only in Calabria, restricted to a single population on the Pollino Massif (Manfriana mountain) (Peruzzi 2011). The chromosome number found is consistent with all the other existing counts reported for the Italian populations belonging to species in the Linum perenne group (Bedini et al 2010 onwards). This species is endemic to Basilicata and Calabria (Peruzzi et al 2014), and it is typical of calcareous cliffs on the Pollino Massif.
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