Galanthus reginae-olgae three smaller inner tepals, white with variable green markings near the tips. The outer tepals are about 15–35 cm long, the inner ones 9–12 mm long. Populations of "Galanthus reginae-olgae" that flower at different times, with or without the leaves being fully developed, have been described as separate species or subspecies. Those described as "G. reginae-olgae" subsp. "reginae-olgae" flower in the autumn, either before the leaves develop or with the leaves. Those described as "G. reginae-olgae" subsp. "vernalis" flower in late winter or early spring, with the leaves. "Galanthus reginae-olgae" was first described in 1876 by Theodoros G. Orphanides. The
Chlamydomonas nivalis "Uredo nivalis". Over the next century, many researchers disputed over whether these organisms were lichen, plants, alga, or animal. It was not until the early 20th century when researchers finally began to agree on the algal nature of the organism and gave its currently known name, "Chlamydomonas nivalis". In 1968 "C. nivalis" was officially recognized as a collective taxon. Unfortunately, due to the lack of sequencing techniques, reliance on visually examining similarly looking snow alga, and complicated life cycle of this species, errors continued to be made in classifying this and other species of snow algae. Today, "C. nivalis" has