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 three stages, including a do-it-yourself demo stage. The show's 75–80 seminar speakers include garden writers and garden design experts from around the US, Canada, and UK. The show also has a City Living gardening demonstration, a balcony garden exhibition, the Vintage Garden Market, the Gourmet Marketplace, Ikebana displays, and a floral competition. There is a live reality show held daily in front of show audiences which have friendly competitions. Container Wars challenges two designers to create three lush planted containers in under an hour. The 2019 Northwest Flower & Garden Show dates are February 20 to 24. The show was