Milfoil is a species of the genus Achillea, commonly known as yarrow. The spelling of milfoil is unique and may cause confusion due to its pronunciation. The IPA phonetic transcription of the word is /ˈmɪlfɔɪl/. The letter combination 'lf' in milfoil is pronounced like an 'f', while the 'o' and 'i' work together to create an 'oy' sound. The word originates from the Latin phrase "millefolium," which means "thousand leaves," which refers to the plant's feathery foliage.
Milfoil refers to any of various aquatic plants belonging to the genus Myriophyllum, typically found in freshwater environments. It is a perennial herbaceous plant characterized by its feathery or finely divided leaves, which are arranged in whorls around the stem. Milfoil is known for its delicate appearance and often has a vibrant green color.
The term "milfoil" is commonly used to refer to the species Myriophyllum aquaticum, also known as Eurasian watermilfoil or parrot feather. This particular species is native to Europe and was introduced to other regions, such as North America, where it has become an invasive species. Eurasian watermilfoil forms dense mats of vegetation in lakes, ponds, and slow-moving streams, displacing native aquatic plants and affecting the overall balance of the ecosystem.
In addition to its invasive tendencies, milfoil has also been used for various purposes. Historically, it has been employed in herbal medicine due to its astringent and antibacterial properties. Milfoil extracts have been used to treat various ailments, including digestive disorders and menstrual irregularities. Furthermore, in horticulture, milfoil is sometimes grown as an ornamental plant, particularly for water gardens, owing to its attractive appearance.
Overall, milfoil refers to a group of aquatic plants, including the invasive Eurasian watermilfoil, characterized by their feathery leaves and presence in freshwater habitats.
Achillea.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The herb yarrow, found growing on roadsides, having small white flowers, and numerous narrow-pointed leaves.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "milfoil" has a fairly straightforward etymology. It originated from the Middle English word "milfoile", which was derived from the Old English words "myligfe" or "mylisċe". These Old English terms were compound words created by combining "myl" meaning "mild" or "soft" and "foile" or "fulluht" meaning "leaf" or "leaflet". Therefore, "milfoil" essentially means "soft leaf" or "soft leaflet". This term is used to refer to various plants with feathery or finely divided leaves.