Menyanthaceae in the context of "Umbel"

Nymphoides, or floatingheart, is a genus of aquatic flowering plants in the family Menyanthaceae. The genus name refers to their resemblance to the water lily Nymphaea. Nymphoides are aquatic plants with submerged roots and floating leaves that hold the small flowers above the water surface. Flowers are sympetalous, most often divided into five lobes (petals). The petals are either yellow or white, and may be adorned with lateral wings or covered in small hairs. The inflorescence consists of either an umbellate cluster of flowers or a lax raceme, with internodes occurring between generally paired flowers.

Species of Nymphoides are sold as aquarium plants, including the "banana plant", N. aquatica and the "water snowflake", N. indica. Species native to the United States are N. cordata in the northeast and N. aquatica in the southeast. Nymphoides peltata is native to Europe and Asia, but can be found in the United States as an invasive aquatic weed. The non-native species N. cristata and N. indica also reportedly occur in Florida (Jacono 2000).

Nymphoides aquatica is an aquatic plant in the Menyanthaceae, native to the southeastern United States from Texas to Maryland. It is known variously as the banana plant, banana lily, banana floatingheart, and the big floatingheart. It is most commonly called the banana plant because of its banana-shaped roots. These unusual roots store nutrients.

Nymphoides indica is an aquatic plant in the Menyanthaceae, native to tropical areas around the world. It is sometimes cultivated, and has become a minor weed in Florida, where it resembles the native Nymphoides aquatica. Common names include banana plant, robust marshwort, and water snowflake;

Nymphoides peltata, the fringed water-lily is perennial, rooted aquatic plant with floating leaves of the family Menyanthaceae. Synonyms include Menyanthes nymphoides L., Villarsia nymphoides, Limnanthemum peltatum S.G.Gmel., Nymphoides nymphoides (L.) Britton, and other vernacular names include yellow floating heart, floating heart, water fringe, and entire marshwort.

It is native throughout most of Europe (excluding Ireland and Scandinavia) and temperate Asia, and locally in Algeria in northwest Africa.

Nymphoides hydrophylla, commonly known as crested floating-heart, is an aquatic plant of the family Menyanthaceae native to Taiwan. It has cordate floating leaves that support a lax inflorescence of dainty white flowers with fringed petal margins. Its slim stem (spear) is edible, and is used as vegetable in Taiwan, mostly produced at Meinong District, Kaohsiung.

Flowers of N.  hydrophylla are gynodioecious. The fruit is a capsule bearing many flattened seeds.