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Helanthium tenellum

Pygmy chain sword

Helanthium tenellum

Pygmy chain sword

  • Grasslike ground covering plant
  • Very narrow leaves
  • Olive green to reddish coloration
  • Spreads fast through runners
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Description

Small foreground plants for aquariums are in short supply, but Helanthium tenellum (= Echinodorus tenellus) is one of the best. The submerged leaves are very narrow and light-, middle-, olive-green to reddish. It differs from the always light green Helanthium tenellum "parvulum" by darker, often reddish coloration and narrower leaves. The runners spread round the aquarium. A true "lawn'' effect appr. 5-10 cm tall is only achieved at high light intensities, so you must make sure larger plants do not overshadow the plant. Plant individual plants a couple of centimetres apart (easiest with tweezers). A nutritious bottom promotes growth.

Helanthium tenellum, the pygmy chain sword, is still also known under its synonym Echinodorus tenellus. It is the smallest known species among the runner-forming sword plants, and rather variable. The variety usually found in trade originates from the American tropics (Brazil?). Its submersed leaves are very narrow, pointed, and of a medium to olive green or even reddish. They grow to a length of 6 to 10 cm, sometimes even longer, and a width of about 1.5 mm. Their widest part lies above the middle, around 2 cm below the tip.
The submersed leaves of another form originating from North America (see Helanthium tenellum "parvulum"), though rarely cultivated today, has always light green leaves that are not as narrow, with around 2 mm width. They have their widest part below the middle.


- To be continued -

Complete botanical name Helánthium tenéllum (Mart. ex Schult.f.) J.G.Sm.
Family Alismataceae
Genus Helanthium
Difficulty medium
Usage Nano tanks, Foreground, group, Foreground, ground cover
Aquascaping forms a grass-like lawn
Growth fast
pH value 5 - 7
Temperature tolerance 10 - 35°C
Carbonate hardness 0 - 14°dKH
General hardness 0 - 30°dGH
Propagation Runners
Can grow emersed? yes
Source Flowgrow
Complete botanical name
Helánthium tenéllum (Mart. ex Schult.f.) J.G.Sm.
Family
Alismataceae
Genus
Helanthium
Difficulty
medium
Usage
Nano tanks, Foreground, group, Foreground, ground cover
Aquascaping
forms a grass-like lawn
Growth
fast
pH value
5 - 7
Temperature tolerance
10 - 35°C
Carbonate hardness
0 - 14°dKH
General hardness
0 - 30°dGH
Propagation
Runners
Can grow emersed?
yes
Source
Flowgrow

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Customer reviews

This item has been rated 5 out of 5 stars
3 Reviews
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Gunnar H.
sehr empfehlenswert
1st July 2018
Helanthium tenellum - ADA - In Vitro M
Helanthium tenellum - ADA - In Vitro M

Hatte diese schönen kleinen Rasen bildenden Pflanzen früher schon mal gehabt. Nach langer Suche habe ich hier endlich meine Wunschpflanzen bekommen. (read more)

Ricky H.
Absolut empfehlenswert
3rd November 2014
Helanthium tenellum - Pot
Helanthium tenellum - Pot

Der Topf war reichlich gefüllt. Dazu kommt, dass fast kein Blatt beschädigt war. Nach ca. 2 Wochen haben sich die Blätter aus submer umgestellt und wachsen in einem richtig... (read more)

Luigi B.
14th March 2013

Perfekter Service...