Galanthus earlier authors had mainly relied on was shown to be highly homoplasious. A number of species, such as "G. nivalis" and "G. elwesii" demonstrated intraspecific biogeographical clades, indicating problems with speciation and there may be a need for recircumscription. These clades were assigned names, partly according to Davis' previous groupings. In this model clade Platyphyllus is sister to the rest of the genus. By contrast another study performed at the same time, using both nuclear and chloroplast DNA but limited to the 14 species found in Turkey, largely confirmed Davis' series and subseries, and with biogeographical correlation. Series "Galanthus" in
Micranthes nivalis Micranthes nivalis Micranthes nivalis is a plant species in the saxifrage family. It is commonly called snow saxifrage or (ambiguously) "alpine saxifrage". Found on irrigated rocks or open vegetation in shaded sites, often on mountain ledges and crags with base rich substratum. This species is not very tolerant of competition and so is found in damp crevasses where it survives in small pockets. "M. nivalis" is a perennial species which has been found to set seed in Scotland but not in Cumbria where the populations are small and threatened. This species is also found in Norway, Ireland, Svalbard, northern Germany,