Autumn in the reservoirs

But when autumn nights naholodyat much water, showered flowers, ripe fruits dispersed by wind and waves, surface green leaves and stems wither and die. In very many aquatic plants have underground rhizomes, which saved lives after the death of stems and leaves. Since the rhizomes overwinter in reed, cane, Susak, the white water lilies and yellow water lilies. But here's a little plantlets - duckweed that covered the entire surface of the water in the summer in stagnant water bodies. When it's cold, the surface of the water quickly cleared. This stems from the fact that frost plant dies, loses air and sinks. But dying is not all seedlings. By this time, some of it separates the plates, usually brownish-red color, more dense than summer, filled with starch and deprived of air. It was these records that botanists called lenticels, or onion, remain alive. Losing the air, they sink to the bottom, where it retained until the spring. In the spring, when the ice melted and warm water, they float up and begin to grow. We found three types of ryasok: mnogokoreniaya duckweed (Spirodela polyrrhiza Schleid.), Small duckweed (Lemna minor L., Fig. 124) and ternary duckweed (Lemna trisulca L., Fig. 125). The method described above applies to winter, in fact, the first sight. But the other two also hibernate on the bottom. Most of the other aquatic plants with the onset of cold weather also sinks to the bottom. Some, such as water buttercups, overwinter in the form of the whole plant. Others killed themselves, but not before separating different kinds of winter shoots, dense resting buds, tubercles, which are beginning to sprout in the spring when the water warmed. Drowning autumn darkened stems Elodie and many pondweed. Curly pondweed (Potamogeton crispus L.) forms a special winter shoots, similar to a thick sheaf of leaflets, put on a hot rod from the bottom. Autumn beam breaks off and circling, going down, where the tip is screwed in the muddy bottom. Floating in the summer on the water surface vodokrasy fall dropping to the bottom of dense overwintering pechechki. Interestingly behaves water plant - telorez. This is the largest we have freely floating plant. Telorez inhabits quiet river backwaters, oxbow lakes or shallow bays of lakes. Long, prickly leaves remind him seated spiked leaves of the tropical aloes, for which he received the Latin name of the Stratiotes aloi-des L. In summer its leaves grow large beam on the submerged ground. However, the leaves themselves and half submerged. Downward hanging bunch of long roots, which, however, does not attach to soil and does not even reach the bottom. During the year telorez not once it rises, then sinks down. In the spring he swims near the surface of the water, but almost never pops out. At the time of flowering, which begins in July, telorez markedly raised, protruding from the water and throwing hand whorled flowers, white petals which are at the base have a dark purple color. Telorez - dioecious plant, both male and female flowers are on. different copies. Pollination occurs through insects.