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Echinodorus subalatus

°C
°dKH
Aquarium suitability: yes
Usage: Semi-emersed plant for open tanks, Background
Difficulty: easy
Growth: medium
See also: Echinodorus decumbens , Echinodorus inpai , Echinodorus palifolius
Range and localities: 

Tropical America: Mexico to northern Argentina


Height: 30 - 50 cm
Width: 15 - 30 cm

Availability [?]: 
  • occasionally available commercially

Synonyms: 
  • Echinodorus andrieuxii (Hook. & Arn.) Small
  • Echinodorus intermedius (Mart. ex Schult.f.) Griseb.
  • Echinodorus subalatus ssp. andrieuxii (Hook. & Arn.) R.R.Haynes & Holm-Niels.

Habit, plant type:

  • rosette
Botanical name [?]: Echinódorus subalátus (Mart.) Griseb.

Major group (unranked): Seed plants: Flowering plants (Angiosperms)
Order: Alismatales
Family: Alismataceae
Genus: Echinodorus

Description: 

Echinodorus subalatus is quite widely distributed in the tropical regions of America, found in bogs and on riverbanks and lakeshores, temporary ponds and flood plains from Mexico to Argentine. During the rainy season it is often completely submersed. This species is very variable; some of its varieties from Central and party also from South America are thought to be subspecies by some authors (E. subalatus ssp. andrieuxii) or even as distinct species (E. andrieuxii).

E. subalatus is closely related to E. decumbens, E. inpai and E. palaefolius. Like the latter three, the grown emersed plant of E. subalatus has longitudinal ridges on its edged leaf stalks, with a distinct groove on the upper side, and rather small flowers with 12 pale yellow stamina and rather narrow petals.
The emersed leaves are narrow-elliptic to narrow ovate, with a pointed to round basis and a pointed tip. The edges of the axes of the inflorescence are alate.

E. subalatus is little known as aquarium plant. It is possible that the plant sold under the name of E. subalatus may be identical with the one erroneously sold as "Echinodorus argentinensis" and might be rather counted among E. palaefolius.
The plant known as Echinodorus spec. 136 from Dennerle is probably E. subalatus, though.

To be continued...

References and further reading:
Light medium to high 
Temperature tolerance 15 to 30 °C
Optimum temperature 23 to 28 °C
Carbonate hardness 0 to 14 °dKH
pH value 5 to 8 
Carbon dioxide (CO2) 10 to 40 mg/l
Nitrate (NO3-) 10 to 50 mg/l
Phosphate (PO43-) 0.1 to 3 mg/l
Potassium (K+) 5 to 30 mg/l
Iron (Fe) 0.01 to 0.5 mg/l

Growth: medium

Propagation: Proliferating inflorescences, Rhizomteilung, Seeds, Splitting, cutting off daughter plants

Can grow emersed?: yes

Suited for outdoor cultivation / ponds: yes

Winter hardiness: not hardy in Germany

References and further reading:
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