Family Potamogetonaceae. The term is derived from two Greek words meaning "living near the river. Distribution Europe, Asia, North Africa. Description Perennial submerged plant with creep ing rhizome; cylindrical stem; oval, lanceolate or near / hnear light green leaves, joined to the stem by a dilated base
Propagation By cuttings. The tips are cut and embedded in the soil-
Environment Temperature: 50-59°F (10-15 "Cl, but able to survive at lower temperatures; it has been a popular plant for cold aquaria. pH: neutral or slightly alkaline. Water hardness:medium. Illumination: intense Soil: sand and mud.
Note Potamogeton densus is often used to oxygenai * and purify the water of cold aquaria, where it grows well as long as the light level is sufficent. In general, species <: I the genus Potamogeton are not considered best for 2 3 * 5 i|> 9 ononis warm-water aquarium use.
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