Echinodorus decumbens

Decumbent swordplant

Echinodorus decumbens

Decumbent swordplant

  • Narrow-leaved solitary plant
  • Natural appearance
  • Warmth tolerant, suitable for Discus tanks
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Description

Echinodorus decumbens is a very narrow-leaved wild type from Brazil. It was discovered by Christel Kasselmann at the Surubim river in eastern Brazil and also scientifically described by her. Until now this sword plant is only known from the original location. Since the 1990s it has been widely spread in cultivation, however it is not very familiar to the hobbyists and not often available in recent times.
This close relative of Echinodorus subalatus and E. palifolius develops in its submerged form very narrow, almost linear, freshly green, slightly transparent leaves and gets about 50 cm tall. It is named after the decumbent growth of its long inflorescences.

As virtually all Echinodorus, this species prefers a nutrient-rich substrate and medium to strong lighting. It has no special demands and grows also well in medium hard water. Due to its origin in a hot region of Brazil, Echinodorus decumbens tolerates high temperatures around 30 °C, so it's suitable for Discus tanks. Its growth is not very fast. It is propagated by adventitious plantlets on the inflorescences which appear mostly in the emersed form, but sometimes also in the aquarium. As usual with Echinodorus from water plant nurseries, it is mostly delivered in its terrestrial (emersed) form with considerably broader, lanceolate leaves. Planted into the aquarium, its much narrower submerged leaves will appear.

The Decumbent swordplant deserves much more attention in the aquascaping. In complete contrast to many colourful and broad-leaved Echinodorus cultivars, this wild type has a modest, natural appearance, with its very narrow, green leaves. It sets vertical accents as specimen plant or small group in the mid- or background and is well combined with small-leaved stem plants. Especially for South America-themed biotope tanks, Echinodorus decumbens is an appropriate plant. As emersed plant in paludariums, this species looks decorative with its lanceolate, arching foliage.

In 1994, Echinodorus decumbens was discovered by Christel Kasselmann on Rio Surubim in the eastern Brazilian state Piauí. Later on it was scientifically described by her, too. Up to now, this species has only been found in that location, where it grows directly on the banks as well as in indundation zones of the river. Once imported into Germany, E. decumbens was cultivated and quickly spread in the hobby; today, it is frequently offered in trade.

Its scientific name means "low-lying sword plant", which only refers to its decumbent, i.e. creeping flower stalks; the leaf rosette has an upright growth habit.
E. decumbens is closely related to E. subalatus, and its emersed form differs from it - amongst other characteristics - by its decumbent (instead of upright) flower stalks, which grow distinctly larger than the leaves and whose flower whorls grow at larger distances. (read more)

Complete botanical name Echinódorus decúmbens Kasselmann
Family Alismataceae
Genus Echinodorus
Difficulty easy
Usage Background, Midground
Height 30 - 50cm
Width 10 - 30cm
Growth fast
pH value 5 - 7
Temperature tolerance 18 - 30°C
Carbonate hardness 0 - 21°dKH
General hardness 0 - 30°dGH
Propagation Proliferating inflorescences
Can grow emersed? yes
Source Flowgrow
Complete botanical name
Echinódorus decúmbens Kasselmann
Family
Alismataceae
Genus
Echinodorus
Difficulty
easy
Usage
Background, Midground
Height
30 - 50cm
Width
10 - 30cm
Growth
fast
pH value
5 - 7
Temperature tolerance
18 - 30°C
Carbonate hardness
0 - 21°dKH
General hardness
0 - 30°dGH
Propagation
Proliferating inflorescences
Can grow emersed?
yes
Source
Flowgrow

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Maria B.
Very nice looking plant :)
17th March 2021
Echinodorus decumbens - Pot
Echinodorus decumbens - Pot

My aquarium is 50cm tall, so have high hopes for these ones. Ordered 2 pots, but both pots had 2 plants, so Im extremely happy :D All plants were in very good condition and my... (read more)