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
Northwest Flower and Garden Show Northwest Flower and Garden Show The Northwest Flower & Garden Show (also known as the Northwest Flower & Garden Festival) is an annual exhibition of horticulture and gardening held in Seattle, Washington, for five days each February. It is the largest garden show west of Philadelphia and is regarded as the second largest garden show in the country. It is held at the Washington State Convention Center, and has been since the first year. The show has lush, fully built display gardens (which are judged for awards), over 100 educational and entertaining seminars, and a garden marketplace exclusively for plants,