Monochoria hastata

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Taxonomy
Kingdom: Plantae
Phylum: Magnoliophyta
Class: Liliopsida
Order: Liliales
Family: Pontederiaceae
Genus: Monochoria
Species: M. hastata
Scientific Name
Monochoria hastata
(L.) Solms
Common Names

arrowleaved monochoria, arrowleaf false pickerelweed, monochoria

Overview

Appearance
Monochoria hastata is a perennial aquatic herbaceous plant native to temperate and tropical Asia and Northern Australia. Plant size, leaf shape, and flower number in M. hastata are highly dependent on the amount of water available. It has a well-developed, branching rhizome and plants may be connected by stolons. M. hastata can grow from 12-40 in. (30-100 cm) tall.
Foliage
Leaves of mature M. hastata have a hastate base and an acuminate tip. They have long sheath-like petioles.
Flowers
The blue to purple flowers of M. hastata are held on spike-like racemes. There can be from 15-60 flowers per raceme.
Fruit
Fruits are ellipsoid 3-valved capsules about 0.4 in. (1 cm) long. The numerous oblong seeds have 8-12 longitudinal ribs.
Ecological Threat
Monochoria hastata is listed as a Federal Noxious Weed. It grows in rice fields and other shallow bodies of water.

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