Echinodorus angustifolius

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Echinodorus angustifolius
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
Order: Alismatales
Family: Alismataceae
Genus: Echinodorus
Species: E. angustifolius
Binomial name
Echinodorus angustifolius
Rataj in Mono. Genus Ecinodorus Rich., 1975

Note: Haynes & Neilson classify this species under E. bolivianus but the latest revision by Rataj (2004) keeps it distinct. There is mention that it may be triploid, whereas bolivianus is diploid.

Synonyms

E. pusilla; E. tenellus var. latifolius

Description

Submersed leaves are of a narrow lanceolate shape, light-green, 30 to 50 cm long and 5 to 10 mm wide. Each plant may possess as many as 20 leaves. Immersed leaves (6) - 10 - 15 cm x 0.6 - 1 cm with narrowly lanceolate blades, resembling E. tenellus and E. latifolius. Inflorescence erect 15 - 25 cm long with 2 - 3 whorls. Pedicels 1 - 3 cm long; corolla 1.2 - 1.5 cm in diameter, pistils green; achenes 1.2 - 1.6 mm long, 3 ribbed.

Differs from E. latifolius by indistinct differentiation of Immerse leaves into petiole and blade, green pistils and ribbon-shaped leaves.

Distribution

Brazil (Matto Grosso region)

Cultivation

Only discovered fairly recently. E. angustifolius looks like Vallisneria when growing well.

It prefers a sandy soil and sub-tropical temperatures (though it will grow in warmer waters). Medium to high light. It forms pseudo-stolons which root easily. Grows well submerse and propagates easily. In emerse conditions it seems to be dwarfed and may not grow so well.

External Ref.

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