Salvinia natans

the
1
species of the genus
thredi-yamen, eucalyptus leaves and -year-olds, small, aquatic floating, widely found in the temper zone of the northern hemisphere. Stems slender, rootless; leaves
3
pieces,
2
pieces floating surface, green, long round, surface with a cluster of small protrusions of thick hair. The leaves are arranged closely on both sides of the stem, shaped like eucalyptus leaves, and the other leaf is finely cracked like silk, suspended in water, specialized into false roots. In the prosthetic foundation of adult plants, it is often visible that
4
to
8
spores of the size of spores, small called large spores, contain a large spore sac, which produces a female spore in the sac Large spores, containing most of the small spore sacs with short handles, each small spore sac can produce
64
male spores, mature large and small spores sprouted into female, male ligation, sexual reproduction.species

species, mainly distributed in the Americas and Africa tropical, China only
1
species. in a creek of raw and still water. Whole grass fried clothing, treatment of virtual labor fever, eczema, external treatment of dan toxic sores and burns, but also can do green fertilizer and feed.