Galanthus "Akrokorion"), he placed "Galanthus" in the family Liliaceae, section Narcissi. Lamarck provided a description of the genus in his encyclopedia (1786) and later "Illustrations des genres" (1793). In 1789 de Jussieu, who is credited with the modern concept of genera organised in families, placed "Galanthus" and related genera within a division of Monocotyledons, using a modified form of Linnaeus' sexual classification but with the respective topography of stamens to carpels rather than just their numbers. In doing so he restored the name "Galanthus" and retained their placement under Narcissi, this time as a family (known as "Ordo", at that time)
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