arrowleaved monochoria (Monochoria hastata (L.) Solms)

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.

State List - This map identifies those states that list this species on their invasive species list or law. For more information, visit Invasive.org

Kingdom: Plantae

Phylum: Magnoliophyta

Class: Liliopsida

Subclass: Liliidae

Order: Liliales

Family: Pontederiaceae

Genus: Monochoria

Subject: Monochoria hastata (L.) Solms

Other Common Names:
arrowleaf false pickerelweed, monochoria

Common Name Reference: Weed Science Society of America Common Names List

Scientific Name Reference: PLANTS Database