Galanthus confused with the other two genera, "Leucojum" and "Acis" (both called snowflakes). "Leucojum" species are much larger and flower in spring (or early summer, depending on the species), with all six tepals in the flower being the same size, though some "poculiform" (goblet- or cup-shaped) "Galanthus" species can have inner segments similar in shape and length to the outer ones. Galantheae are likely to have arisen in the Caucusus. "Galanthus" has about 20 species, but new species continue to be described. "G. trojanus" was identified in Turkey in 2001. "G. panjutinii" (Panjutin's snowdrop) was discovered in 2012 in five locations
Chlamydomonas nivalis optimal position in the snow for moisture content, light, and temperature. When in the immotile cyst stage, the "C. nivalis" cells must depend on the flow of meltwater to move it by chance to a favourable area. The temperatures in which this species can survive in ranges from below 0 °C to just above 20 °C. Growth is slow when temperatures are below 5 °C. At 5-15 °C the growth of "C. nivalis" cells can outperform the growth of C. reinhardtii cells. Both species grow at the same rate at 20-25 °C. The growth of "C. nivalis" is suppressed when