Nymphoides

Ezannos floating heart ( Nymphoides ezannoi )

The Seekannen ( Nymphoides ) are a genus within the family of fever clover plants ( Menyanthaceae ). More than 40 species are distributed in the freshwater of the temperate to tropical areas of the world.

Description

Nymphoides species are mostly perennial, rarely annual herbaceous plants. There are mostly floating plants, the carpet-like cover lakes and ponds. They usually form short rhizomes with many stalk-like filaments ( stolons ). The stems in the flood water and sometimes form rootless nodes ( more nodes ). The alternate, sometimes almost against permanent leaves are stalked and easy with a smooth margin. You own at the juvenile stage underwater leaves and as mature plants floating leaves.

The flowers stand in groups at the nodes above the water surface. The hermaphrodite, radial symmetry flowers are rarely four, usually fünfzählig. They are usually heterostyl. The usually five sepals are fused only at their base. The usually five petals are usually grown only at their base and have a fringed edge. It's just a circle with five free, fertile stamens present. The ovary is upper constant. The style ends in a two-to three-lobed stigma. It can be formed with many seeds capsule fruits.

Systematics and distribution

For the genus Nymphoides seg. there are the synonyms: Limnanthemum SGGmel, Schewykerta .. SGGmel.

The genus has a wide distribution from the temperate to the tropical zones on the northern and southern hemispheres. There are over 40 species of Nymphoides:

  • Nymphoides aquatica ( JFGmel. ) Kuntze: North America.
  • Nymphoides aurantiaca ( Dalzell ) Kuntze: Asia and Australia.
  • Nymphoides beaglensis Aston Australia.
  • Nymphoides bosseri A.Raynal: Africa.
  • Nymphoides brevipedicellata ( Vatke ) A.Raynal: Africa.
  • Nymphoides cordata ( Elliott ) Fernald: North America.
  • Nymphoides coreana ( Léveillé ) Hara: Asia.
  • Nymphoides crenata ( F.Muell. ) Kuntze: Australia.
  • Nymphoides cristata ( Roxb. ) Kuntze: Asia: China, Taiwan and eastern India.
  • Nymphoides disperma Aston Australia.
  • Nymphoides elegans A.Raynal: Africa.
  • Nymphoides elliptica Aston Australia.
  • Ezannos floating heart ( Nymphoides ezannoi Berhaut ): Africa.
  • Nymphoides exigua ( F.Muell. ) Kuntze: Australia.
  • Nymphoides exiliflora ( F.Muell. ) Kuntze: Australia.
  • Nymphoides fallax Ornduff: Central and South America.
  • Nymphoides flaccida L.Sm.: Central and South America.
  • Nymphoides forbesiana ( Griseb. ) Kuntze: Africa.
  • Nymphoides furculifolia Specht: Australia.
  • Nymphoides geminata ( R.Br. ) Kuntze: Australia.
  • Nymphoides grayana ( Griseb. ) Kuntze: Central and South America.
  • Nymphoides guineensis A.Raynal: Africa.
  • Nymphoides hastata (double ) Kerr: Asia.
  • Nymphoides herzogii A.Galàn - Mera & G.Navarro: Central and South America.
  • Nymphoides humboldtiana ( Kunth ) Kuntze: Central and South America.
  • Nymphoides humilis A.Raynal: Africa.
  • Nymphoides hydrocharioides ( F.Muell. ) Kuntze: Australia.
  • Nymphoides hydrophylla ( Lour. ) Kuntze: Asia.
  • Nymphoides indica ( L.) Kuntze: pantropical.
  • Nymphoides krishnakesara KTJoseph & Sivar. Asia.
  • Nymphoides lungtanensis SplI, THHsieh & CCLIN: Asia.
  • Nymphoides macrosperma Vasudevan: Asia.
  • Nymphoides microphylla ( A.St. - Hil. ) Kuntze: Central and South America.
  • Nymphoides milnei A.Raynal: Africa.
  • Nymphoides montana Aston Australia.
  • Nymphoides moratiana A.Raynal: Africa.
  • Nymphoides parvifolia ( wall. ) Kuntze: Asia and Australia.
  • European floating heart ( Nymphoides peltata ( SGGmel. ) Kuntze ): Eurasia.
  • Nymphoides plano cum Aston Australia.
  • Nymphoides quadriloba Aston Australia.
  • Nymphoides rautaneni ( N.E.Br. ) A.Raynal: Africa.
  • Nymphoides siamensis ( Ostenf. ) Kerr: Asia.
  • Nymphoides simulans Aston Australia.
  • Nymphoides sivarajanii K.T.Joseph: Asia.
  • Nymphoides spinulosperma Aston Australia.
  • Nymphoides spongiosa Aston Australia.
  • Nymphoides stygia ( JMBlack ) H.Eichler Australia.
  • Nymphoides subacuta Aston Australia.
  • Nymphoides tenuissima A.Raynal: Africa.
  • Nymphoides thunbergiana ( Griseb. ) Kuntze: Africa.
  • Nymphoides tonkinensis (double ) P.H.Ho: Asia.
  • Nymphoides triangularis Aston Australia.
  • Nymphoides verrucosa ( REFries ) A.Galàn - Mera & G.Navarro: Central and South America.

Pictures

Nymphoides indica:

Swell

  • Ting- tion Ho & Robert Ornduff: Menyanthaceae in the Flora of China, Volume 16: (online)
  • M. Qaiser: Menyanthaceae in the Flora of Pakistan, Volume 111: (online)
Asterids Heterostyly Ovary (botany) Central America Agricultural Research Service
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