Echinodorus angustifolius
Encyclopedia
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.
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.
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.
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. InflorescenceInflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
erect 15 - 25 cm long with 2 - 3 whorls. Pedicels
Pedicel (botany)
A pedicel is a stem that attaches single flowers to the main stem of the inflorescence. It is the branches or stalks that hold each flower in an inflorescence that contains more than one flower....
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.
Cultivation
Only discovered fairly recently. E. angustifolius looks like VallisneriaVallisneria
Vallisneria is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus has 6-10 species that are widely distributed, but do not grow in colder regions....
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.