Myosotis rivularis

Description

Myosotis rivularis is a species of Magnoliopsida first described by Jacob Tycho Conrad Vestergren, and given the simplified Asian name by AP Khokhrjakov. Myosotis rivularis belongs to the genus Myosotis, and the family Boraginaceae. Myosotis is a genus of flowering plants in the family Boraginaceae. The name comes from the Ancient Greek μυοσωτίς "mouse's ear", which the foliage is thought to resemble. In the northern hemisphere they are colloquially known as forget-me-nots or scorpion grasses. Myosotis alpestris is the official flower of Alaska and Dalsland, Sweden. Plants of the genus are commonly confused with Chatham Islands' forget-me-nots which belong to the related genus Myosotidium. More than 500 species names have been recorded, but only 74 species are presently accepted. The remainder are either synonyms of presently accepted or proposed names. The genus is largely restricted to western Eurasia, with approximately 60 confirmed species, and New Zealand with approximately 40 confirmed species. A few species occur elsewhere including North America, South America, and Papua New Guinea. Despite this, Myosotis species are now common throughout temperate latitudes because of the introduction of cultivars and alien species. Many happen to be popular in horticulture. They prefer moist habitats; in locales where they are not native, they frequently escape to wetlands and riverbanks. Only those native to the Northern hemisphere are colloquially denominated "forget-me-nots". One or two European species, especially Myosotis sylvatica, the "woodland" forget-me-nots, have been introduced into most of the temperate regions of Europe, Asia, and the Americas. The genus was originally described by Carl Linnaeus. The type species is Myosotis scorpioides. Myosotis species are distributed in temperate areas of the northern hemisphere and southern hemisphere. The genus has two centres of species diversity in Europe and New Zealand. Genetic analysis indicates that the genus originated in the northern hemisphere, and that species native to New Zealand, Australia, New Guinea and South America form a lineage of closely related species that are likely derived from a single dispersal event to the southern hemisphere.