Tuesday, March 17, 2009

South Europe

Almost all forms of orchids are carried into the Red Book. Plant is undertaken under the protection for the different reasons. First, bright orchid so it is desirable to tear away; the orchids can be easily destroyed moreover, since its seeds can be found in the state of rest many years (of up to 10 years). In order to give sprout, to orchids is necessary that determined cap- mycorhiza. It can pass 10 years before, after giving sprout, orchid will bloom. European floating (water nut) floating (Trapa of natans) this annual plant, whose roots are fastened to the bottom of lake, and rosette from leaves sails on surface water. Leaves are located under water in another form of ; it has the separately located downy and thin as the feathers of peacock, leaves. Small inconspicuous flowers are arranged in the cavities of the floating sheets. Sufficiently large (about 5 cm) nuts with the solid shell in autumn appear. They are immersed on the bottom of lake and in by heat silt in the expectation of favorable conditions.

The imprints of of that floating and its fruit were discovered in the deposits, by which 55 million years. With the offensive of heat after the breakaway of the glaciers of [rogulnik] that floating was extended in the large territory - even in the south of Sweden and in Finland. Archaelogical excavations attest to the fact that in the territory of Latvia fruits of [rogulnika] of that floating were used into the food from the Bronze Age. At present these forms can be revealed in central and South Europe.

In Latvia the plant is extended beyond the limits of very northern boundary. At present floating can be discovered in three lakes - and in The region and in(Pokrate lake in region. All these lakes are found under the protection of state as forbidden natural zones.

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