Elodea

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Elodea

 

(waterweed), a genus of perennial aquatic herbs of the family Hydrocharitaceae. The stems are submerged; the leaves are in whorls. There are about ten species, native to the Americas. E. canadensis is found as an import in many regions of the world; in the USSR it occurs in stagnant and sluggish waters in the European portion and Western Siberia. Only female plants are known; they are noted for very rapid vegetative propagation. Extensive growths of the plant obstruct navigation and fishing. The green parts are used as animal feed and fertilizer. Some species are grown in aquariums.

References in periodicals archive ?
Notes on Anacharis melanoneura (Hymenoptera: Figitidae) and Charitopes mellicornis (Hymenoptera: Ichneumonidae) parasitizing Micromus posticus (Neuroptera: Hemerobiidae).
Oxygenating plants include anacharis (Elodea densa), parrot's feather (Myriophyllum brasilienese) and red hygrophilia (Hygrophilia polysperma rubra).
The bottom of the shallow pond (area 25 x 80 m, mean depth 65 cm) was covered by dense submerged vegetation dominated by Anacharis canadensis, Chara contraria, and Potamogeton spp.
On exposure to solutions of phenyl mercuric hydroxide and phenyl mercuric nitrate, shoot apexes of the monocotyledons Zea mays, Anacharis canadensis, and Ruppia maritima and of the dicotyledons Colcus blumei and Raphanus sativus showed different types of somatic mutations (MacFarlane, 1956; MacFarlane & Messing, 1953), in addition to c-mitosis, inhibition of spindle formation, and other chromosomal alterations in Allium cepa roots (see De Flora et al.