alkaline water-nymph
Najas marina L.

Najas marina L., from the family Hydrocharitaceae, is an aquatic plant commonly known as alkaline water-nymph. It is a widespread species found in freshwater and brackish habitats, including alkaline waters, across Europe, Asia, Africa, Australia, the Americas, and oceanic islands. The species was first published in 1753.
Description
Najas marina L. is a member of the Hydrocharitaceae family and is commonly referred to as alkaline water-nymph. It is reported in diverse aquatic environments, including alkaline waters, and is distributed in regions such as Ontario, Quebec, and many other parts of the world. The species has a broad range, spanning the Nearctic, Neotropical, Palaearctic, and other biogeographic regions. The nomenclatural history of the species includes a discussion on the designation of the lectotype, with Viinikka's choice of 1156.1 (LINN) being recognized as having priority due to its presence in Linnaeus' possession in 1753.
Other common names
Spiny naiadholly-leaved naiadmarine naiadmarine waternymphspiny waternymphprickly naiadprickly waternymphholly-leaf naiadholly-leaf waternymphHollyweedalkaline water-nymphholly-leaved water-nymph
Distribution
Ontario · Quebec · BR · NO · Afrotropical · Australasian · Nearctic · Neotropical · Oriental (Indomalaya) · Palaearctic · Pacific (Oceania) · TW · LK · Flanders · Corse (Corsica) · SE · DK · Global · SV · GT · GD · Hawaii · Belgium · Brussels-Capital Region · Flemish Region · Walloon Region · Algeria · Altay · Amur · Argentina Northeast
Synonyms
Najas marina var. angustifoliaNajas marina var. latifoliaNajas marina var. marinaNajas gracilisNajas marina var. genuina