Anacharis (Egeria densa) is native to South America, in countries like Argentina, Brazil, and Uruguay. The plant has become naturalized in most parts of the United States and also present in other parts of the world: Africa, Asia, and Europe due to its distribution as an aquarium plant.

Identification: Egeria densa is a dioecious, submersed perennial found in lentic and lotic freshwater systems. Only male plants are found in the U.S. and in its native range male plants outnumber female plants by as much as 6:1 (Cook and Urmi-König 1984).

Apr 4, 2025 · Anacharis (Egeria densa) is a widely popular plant readily available for hobbyists to adorn their tanks. You might see it as Waterweed, Elodea, Egeria, or the Brazilian waterweed.

Elodea densa is an aquatic plant growing in water up to 4 m (13 ft) deep, with trailing stems to 2 m (6.6 ft) or more long, producing roots at intervals along the stem.

Egeria densa exhibits the C4 pathway and utilizes HCO3-; thus it is able to photosynthesize in waters with low CO2 levels (Casati et al. 2000). Egeria densa can tolerate high phosphorous levels, but is susceptible to iron deficiency (Parsons and Cuthbertson 2001).

Egeria plants grow almost entirety underwater in freshwater lakes, rivers, and streams. Egeria tends to form dense, one-species stands that can cover hundreds of acres. The plant reduces structural and plant species diversity in lakes and rivers. Egeria can …

The cosmopolitan Egeria densa is a good plant for beginners, and its rapid growth helps create a balance in the aquarium from the start. Stems grows fast to 40-100 cm and becomes 2-4 cm wide. Egeria helps preventing algae because it absorbs a great number of nutrients from the water.

Aug 2, 2024 · Egeria densa, commonly known as Brazilian waterweed or Elodea densa, is a submerged aquatic plant native to South America. It has been introduced to various regions worldwide and is often found in freshwater habitats such as lakes, ponds, rivers, and streams.

Nov 19, 2019 · This datasheet on Egeria densa covers Identity, Overview, Distribution, Dispersal, Hosts/Species Affected, Diagnosis, Biology & Ecology, Environmental Requirements, Natural Enemies, Impacts, Uses, Prevention/Control, Further Information.

Oct 3, 2024 · Egeria densa, commonly known as Brazilian Waterweed or Anacharis, is one of the most widely used aquatic plants in the aquarium hobby. It is valued for its fast growth, oxygenating properties, and ability to help control algae by competing for nutrients.