Biker (2005),

Ceratopteris pteridoides

Aquarium suitability: yes
Usage: Plant for spawning, Water surface
Difficulty: easy
Growth: very fast
See also: Ceratopteris cornuta
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Range and localities: 

Southeastern North America (Florida, Louisiana), Central and South America, China (East and Southeast), India, Bangladesh, Vietnam

  • Parkeria pteridoides Hooker
  • Ceratopteris lockhartii (Hook. & Grev.) Kunze

Misapplied names: 
  • Ceratopteris cornuta
  • Ceratopteris froesii

Habit, plant type:

  • rosette
  • free-floating (surface)
  • fern
Botanical name [?]: Ceratópteris pteridoídes (Hooker) Hieronymus

Major group (unranked): Ferns (Monilophytes)
Order: Polypodiales
Family: Pteridaceae
Genus: Ceratopteris


Floating antlerfern, or Ceratopteris pteridoides, is distrubuted from the American subtropicst and tropics from Florida and Louisiana on southward and has also been found in Vietnam.
It does not grow submersed, but only floating on water and as bog plant on muddy ground. Form and size vary, depending on the conditions of the location it grows in.

The floating leaves of young plants are entire, those of older, larger plants have broad lobes. Their outline is a wide triangle. On older leaves, many young plants form from bulblets in the deep crevices of the lobes.
The leaf stalks are thick and widen even more towards the leaf blade; they consist of spongiform tissue and serve as buoys. (The leaf stalks of Ceratopteris cornuta and C. thalictroides, however, are relatively thin and of an even width.) The leaf lobes of C. pteridoides are mostly oppsite, whereas those of C. cornuta and C. thalictroides are alternate.
Spore-carrying fronds have up to four pinna, and upright growth habit, and they are segemented. They form only rarely in tanks. When the plant is cultivated emersed on nutrient-rich substrate and high light intensities the probability is higher.

To be continued...

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