Hydrocharitales is a botanical name of an order of flowering plants. A well-known system that used this name is the Cronquist system (1981), for an order in subclass Alismatidae, with this circumscription: A botanical name is a formal name conforming to the ICBN. As with its zoological and bacterial equivalents it may also be called a scientific name. Botanical names may be in one part (genus and above), two parts (species) or three parts (below the rank of species). ... The Cronquist system is a scheme for the classification of flowering plants (or angiosperms). ... In the Cronquist system, Alismatidae is a subclass of plant in the class Liliopsida. ...

• order Hydrocharitales

  family Hydrocharitaceae

The APG II system, used here, assigns most of the plants involved to the expanded order Alismatales, in the clade monocots. Genera Apalanthe Appertiella Blyxa Egeria Elodea Enhalus Halophila Hydrilla Hydrocharis Lagarosiphon Limnobium Maidenia Nechamandra Ottelia Stratiotes Thalassia Vallisneria Hydrocharitaceae is a family of that includes a number of species of aquatic plant, broadly they are called tape-grasses. ... A modern system of plant taxonomy, the APG II system of plant classification was published in 2003 by the Angiosperm Phylogeny Group, APG, in Angiosperm Phylogeny Group (2003). ... Families Alismataceae Aponogetonaceae Araceae Butomaceae Cymodoceaceae Hydrocharitaceae Juncaginaceae Limnocharitaceae Posidoniaceae Potamogetonaceae Ruppiaceae Scheuchzeriaceae Tofieldiaceae Zosteraceae The order Alismatales contains the alismatids, a group of monocotyledons (class Liliopsida). ... Orders Base Monocots: Acorus Alismatales Asparagales Dioscoreales Liliales Pandanales Family Petrosaviaceae Commelinids: Arecales Commelinales Poales Zingiberales Family Dasypogonaceae Monocotyledons or monocots are a group of flowering plants usually ranked as a class and once called the Monocotyledoneae. ...