Galanthus leaves (vernation). In the era of molecular phylogenetics this characteristic has been shown to be unreliable and now seven moleculary defined clades are recognised corresponding to the biogeographical distribution of species. New species continue to be discovered. Most species flower in winter, before the vernal equinox (20 or 21 March in the Northern Hemisphere), but some flower in early spring and late autumn. Snowdrops are sometimes confused with the two related genera within the tribe Galantheae, snowflakes "Leucojum" and "Acis". All species of "Galanthus" are perennial petaloid herbaceous bulbous (growing from bulbs) monocot plants. The genus is characterised by the
Luzula nivalis considered L. nivalis to be conspecific with L. arctica, but some of them (Hultén 1968, Böcher et al. 1968) have used the name L. arctica, while the others (Porsild and Cody 1980...) [have used] the correct name L. nivalis.". Elven et al. (2003) also noted that "L. campestris" var. "nivalis" was widely considered to be conspecific with "L. arctica." The current botanical consensus seems to be that lectotypification solves the issue and that "L. arctica" and "L. nivalis" should be regarded as the same species, with the name "L. nivalis" being chosen as this (derived from "L. campestris" var. "nivalis")