Galanthus 1805–1815) he divided Liliaceae into a series of "Ordres", and placed Galanthus into the Narcissi "Ordre". This relationship of Galanthus to either liliaceous or amaryllidaceaous taxa (see Taxonomy of Liliaceae) was to last for another two centuries till the two were formally divided at the end of the twentieth century. Lindley (1830) followed this general pattern, placing "Galanthus" and related genera such as "Amaryllis" and "Narcissus" in his Amaryllideae (which he called The Narcissus Tribe in English). By 1853, the number of known plants was increasing considerably and he revised his schema in his last work, placing "Galanthus" together the
Chlamydomonas nivalis "C. nivalis" is complex, it also helps the algae exploit its niche and survive unfavourable conditions. As a result, "C. nivalis" is one of the best known and studied snow algae. When taking account of the photoprotective effect of its secondary carotenoid, astaxanthin, among the other adaptive mechanisms to its extreme habitat, it can be understood how "C. nivalis" became so dominant in microbial snow algae communities. Green motile offspring are produced in the spring and throughout the summer. They develop into red dormant cysts, the stage where this organism spends most of its life cycle, as the winter season