Galanthus (convolute). He merged "Nivalis" and "Plicati" into series "Galanthus", and divided "Latifolii" into two subseries, "Glaucaefolii" and "Viridifolii" . Early molecular phylogenetic studies confirmed the genus was monophyletic and suggested four clades, which were labelled as series, and showed that Davis' subseries were not monophyletic. An expanded study in 2013 demonstrated seven major clades corresponding to biogeographical distribution. This study used nuclear encoded nrITS (Nuclear ribosomal internal transcribed spacer), and plastid encoded "matK" (Maturase K), "trnL-F", "ndhF", and "psbK–psbI", and examined all species recognised at the time, and also two naturally occurring putative hybrids. The morphological characteristic of vernation that
Flower Garden Banks National Marine Sanctuary President George H. W. Bush authorized Flower Garden Banks National Marine Sanctuary as the 10th National Marine Sanctuary on January 17, 1992. Stetson Bank was added to the sanctuary in 1996. The Flower Garden Banks National Marine Sanctuary administrative offices and laboratories are located in a renovated historic building, a part of the former Fort Crockett, in Galveston, Texas. Research Vessel MANTA is also located in Galveston, and provides a working platform for researchers. A system of mooring buoys, which reduces resource impacts from anchoring, is maintained by FGBNMS staff. Flower Garden Banks National Marine Sanctuary The Flower Garden Banks