Echinodorus angustifolius
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| 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.
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[edit] Synonyms
E. pusilla; E. tenellus var. latifolius
[edit] Description
Submersed leaves ribbon-shaped or narrowly lanceolate, light-green, 30 - 40 - 50 cm long x 5 - 8 - 10 mm wide. Each plant may possess as many as 20 leaves. Emersed leaves (6) - 10 - 15 cm x 0.6 - 1 cm with narrowly lanceolate blades, resembling E. tenellus and E. latifolius. Infloresence 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 emerse leaves into petiole and blade, green pistils and ribbon-shaped leaves.
[edit] Distribution
Brazil (Matto Grosso region)
[edit] Cultivation
Only discovered fairly recently. It is a pity it is not more widely available as it seems very suited to submerse life. It look rather 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.
