Nymphoides cristata is an aquatic plant of the family Menyanthaceae

Menyanthaceae

Menyanthaceae are a family of aquatic and wetland plants in the order Asterales. There are approximately 60-70 species in five genera distributed worldwide. The simple or compound leaves arise alternately from a creeping rhizome. In the submersed aquatic genus Nymphoides, leaves are floating and...

 native to Asia

Asia

Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

. It has cordate

Leaf shape

In botany, leaf shape is characterised with the following terms :* Acicular : Slender and pointed, needle-like* Acuminate : Tapering to a long point...

 floating leaves edged with variegated purple veins that support a dainty inflorescence

Inflorescence

An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...

 of white flower

Flower

A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...

s. Flowers of N. cristata are gynodioecious. The fruit is a capsule

Capsule (fruit)

In botany a capsule is a type of simple, dry fruit produced by many species of flowering plants. A capsule is a structure composed of two or more carpels that in most cases is dehiscent, i.e. at maturity, it splits apart to release the seeds within. A few capsules are indehiscent, for example...

 bearing many flattened seeds.

The plants are commonly sold for use in ornamental water gardens. Outside their native range, however, they can escape cultivation and become nuisance weeds, particularly in Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

. They are not killed by freezing, however, and have been reported in Lake Marion

Lake Marion (South Carolina)

Lake Marion is the largest lake in South Carolina, centrally located and with territory within five counties. The lake is referred to as South Carolina's inland sea. It has a shoreline and covers nearly 110,000 acres of rolling farmlands, former marshes, and river valley landscape...

, South Carolina

South Carolina

South Carolina is a state in the Deep South of the United States that borders Georgia to the south, North Carolina to the north, and the Atlantic Ocean to the east. Originally part of the Province of Carolina, the Province of South Carolina was one of the 13 colonies that declared independence...

.