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
Flower Garden Banks National Marine Sanctuary Flower Garden Banks National Marine Sanctuary The Flower Garden Banks National Marine Sanctuary is a U.S. National Marine Sanctuary located 100 nautical miles (185 kilometers) offshore of Galveston, Texas in the northwestern Gulf of Mexico. Underlying salt domes forced the seafloor upward in various areas of the Gulf of Mexico, resulting in the formation of rises and banks. Conditions of the Gulf of Mexico were conducive to reef-building, which started roughly ten to fifteen thousand years ago. Two reefs, East Flower Garden Bank (EFGB) and West Flower Garden Bank (WFGB), made up Flower Garden Banks National Marine Sanctuary (FGBNMS) when