There are several synonyms for the genus Koellia, which is a group of flowering plants in the family Asteraceae. One of the most common synonyms is Filago, which was the original name given to this group in 1753. Other synonyms include Gnaphalium, which was used in the 19th century, and Helichrysum, which is still used by some botanists today. The Koellia plants are known for their small, fuzzy leaves and delicate flowers, which are usually yellow or white. They are found in temperate and arid regions of Europe, Asia, and North Africa, and are often used in traditional medicine for their anti-inflammatory and antiseptic properties.