Eichhornia
Species of plant
title: "Eichhornia" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["freshwater-plants", "pontederiaceae", "commelinales-genera", "historically-recognized-angiosperm-genera"] description: "Species of plant" topic_path: "general/freshwater-plants" source: "https://en.wikipedia.org/wiki/Eichhornia" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Species of plant ::
|name = Water hyacinth |image = Common Water hyacinth.jpg |image_caption = Common water hyacinth (Pontederia crassipes) |taxon = Eichhornia |authority = Kunth |subdivision_ranks = Species |subdivision = Four species (from Pellegrini et al. 2018):
Eichhornia azurea - Anchored water hyacinth
Eichhornia diversifolia - Variableleaf water hyacinth
Eichhornia, commonly called water hyacinths, was a polyphyletic genus of the aquatic flowering plants family Pontederiaceae. Since it was consistently recovered in three independent lineages, it has been sunk into Pontederia, together with Monochoria. Each of the three lineages is currently recognized as subgenera in Pontederia:
- Pontederia subg. Cabanisia, which includes P. meyeri, P. paniculata (the Brazilian water hyacinth), and P. paradoxa
- Pontederia subg. Oshunae, which includes the common water hyacinth, P. crassipes
- Pontederia subg. Eichhornia, which includes P. azurea, P. diversifolia, P. heterosperma, and P. natans
Pontederia subg. Eichhornia is pantropical, centered in South America but with P. natans being endemic to continental Africa and Madagascar. The other three species are restricted to the Neotropics.
It was named in honour of , an early-19th-century Prussian minister of education.
Description
Its species are perennial aquatic plants (or hydrophytes) with prostrate and densely branched stems. The inflorescences can have one to 30 conspicuously attractive flowers, mostly lavender to pink in colour, rarely white.
References
References
- Umberto Quattrocchi. (19 April 2016). "CRC World Dictionary of Medicinal and Poisonous Plants". CRC Press.
- (2018). "Total evidence phylogeny of Pontederiaceae (Commelinales) sheds light on the necessity of its recircumscription and synopsis of Pontederia L.". PhytoKeys.
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