Vallisneria

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Standard Cyclopedia of Horticulture

Vallisneria (Antonio Vallisneri, 1661-1730, Italian naturalist). Hydrocharitaceae. Two species of aquatic plants, including the well-known eel-grass or tape-grass. This plant is found in fresh water around the world. It is a submerged plant with linear lvs. 1/2 - 6 ft. long, depending on the depth of the water. The lvs. originate in a tuft at the bottom of the water, and the plant spreads by runners sent out from these tufts. Eel-grass is usually found in quiet waters. It has no horticultural rank, except as an aquarium plant. Like many other aquarium plants, it has special interest for students of botany. The pistillate fls. are borne on very long spiral threads and come to the surface, as shown in Fig. 3898. The staminate fls. are borne on very short stalks near the bottom of the water. At the proper time the staminate fls. break away from their stalks and rise to the surface of the water. As they float about, some of the pollen is conveyed to the pistillate fls., and in this haphazard way the blossoms are fertilized and seed is produced.

Both kinds of fls. are very small, and they are borne on separate plants. Eel-grass is readily collected, or can be procured from dealers in aquarium supplies or from collectors of native plants. The plant is sometimes called "wild celery," because it is said to impart a celery-like flavor to wild ducks that feed on it.


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