CATDOLL : CATDOLL: What are the three categories of aquatic plants?

1. What are the three categories of aquatic plants?

Floating water: Water lily

Standing tall on water: Lotus

Submerged: Water Plants

2. What is the name of this plant? Is it poisonous?

It should be the flower of the lily family. It is not poisonous. But it can cause the following harms:

First, it has a strong invasive ability. The plant can form a high-density plant cluster, with a high density of above-ground parts, strong and upright petioles, large leaves, and a long growth period. The underground parts are also densely occupied by rhizomes and roots, leaving almost no living space for other species above and below the ground, including living space for fish, shrimp, shellfish, snails and other organisms;

Second, it has a fast reproduction speed. The plant can be propagated vegetatively and by seeds. Vegetative reproduction is through rhizome germination and division, and vegetative reproduction can reach 7-12 times a year. In Hangzhou Xixi Wetland, single clumps or scattered plantings were carried out on both sides of a 6-meter-wide river in 2007. Three years later, the river was almost closed. The seed reproduction of the plant varies according to the planting area. In the area south of the Yangtze River, the seeds are highly mature and can be harvested and sown as soon as they mature in autumn. In other areas, the seeds are not mature enough and have low germination ability, so they mainly rely on rhizomes for reproduction.

The third is allelopathic effect. Experiments have shown that the extracts of the roots, stems and leaves of the lily of the valley inhibit the germination and seedling growth of other plants, among which the rhizomes have a particularly significant inhibitory effect;

Fourth, it is difficult to eradicate. The water chestnut is an emergent plant that can grow in waters 60 cm deep. The rhizomes of its vegetative reproduction grow in underwater mud. Chemical or other prevention and control measures are ineffective, and it is difficult to eradicate it manually. The fragments of the rhizomes that remain during the artificial eradication process can still be used as reproductive bodies to grow new plants and rapidly multiply and expand. These characteristics of the water chestnut make it easy for the water chestnut to form a single dominant population when planted in suitable areas, and to occupy a large area of ​​water and rivers, destroying the stability of the ecosystem.

Control measures: When used in water landscaping, underground hard materials can be used to isolate and control the growth area of ​​the underground rhizomes of the spatholobus. When planted in an open environment, regular tracking and monitoring should be carried out. In spring or autumn every year, some of the underground rhizomes of the spatholobus should be dug out to control its vegetative reproduction rate. The dug out rhizomes should be exposed to the sun until they dry up to prevent the rhizomes from spreading and reproducing with the silt. In southern China, some of the seeds can be removed before they mature in autumn to reduce the amount of seeds. For the spatholobus that has been introduced into production areas such as paddy fields and lotus ponds, the rhizomes should be pulled out and removed in time and exposed to the sun.

3. What are the morphological characteristics of these three plants, namely, hydrangea, hyacinthus and hyacinthus, and how to distinguish them?

The leaves of the plant are oval, without a distinct heart shape at the base.

The leaves of the raindrops are typically heart-shaped, slightly rounded, but please note that it is not water hyacinth, it is another plant called water hyacinth.

The leaves of the pickerel grass are long and heart-shaped.

From 1 to 4, they are: spathiphyllum, hyacinthus, water hyacinth, and spathiphyllum.

1. Water calathea. Other names: Water calathea, Water calathea, Thalia

Perennial aquatic herb. Leaves are ovate-lanceolate, light gray-blue, with purple edges, 50 cm long and 25 cm wide. Compound racemes, small, violet-colored flowers. The whole plant is covered with white powder. It is an excellent greenhouse flower in temperate regions, with flower stalks up to 2 meters high. It is a newly introduced aquatic flower with high ornamental value in my country in recent years, named in memory of German botanist Johann Sayre. It includes 12 species that grow in swamps.

2. Rain-flower. Other names: floating rose, blue flower

The genus Yujiuhua is an annual wetland or aquatic herb in the family Yujiuhua. The stem is erect, 50-90 cm high. The leaves are broadly cordate or ovate-cordate, with acuminate tips and cordate bases; the basal leaves have long petioles, while the petioles of the stem leaves gradually shorten, expanding into sheaths at the base, and clasping the stems. The racemes are then gathered into panicles, with blue flowers and free perianth. The capsule is ovate.

3. Pickerel grass. Other name: North American Pickerel grass

Perennial aquatic or wetland herb, petiole green, cylindrical, leaves large, up to 25 cm long, up to 15 cm wide, dark green, leaf shape variable. Most are obovate lanceolate, about 10-20 cm long. The two upper petals each have two yellow-green spots, scape erect, usually higher than the leaf surface.

The rhizome is a whisker-like adventitious root, 15 to 30 cm long, with many root hairs. The underground stem is thick, yellow-brown, with bud eyes, and the underground stem leaves are clustered. The plant height is 80 to 150 cm. The petiole is green, cylindrical, and the cross-section surface is membranous. The leaves are smooth, olive-colored, obovate-lanceolate. The base of the leaves is broadly heart-shaped, and the tip is gradually pointed. The spike inflorescence is terminal, 5 to 20 cm long, with more than 200 small flowers densely distributed, blue-purple with yellow spots, about 10 mm in diameter, and 6 perianth lobes, nearly round, and the base of the lobes is connected to form a tube. The fruit is green at the beginning and brown after maturity; the peel is hard, and the seeds are oval, 1 to 2 mm in diameter. The flowering and fruiting period is from May to October.

[The flower shapes of the three plants are different. You will find it if you look carefully]

The leaves of the water hyacinth are oblong, while the leaves of the water hyacinth are typically heart-shaped (relatively round), with a large hollow gourd-like thing at the base, so it is also called water hyacinth. Compared with the water hyacinth, the petiole of the water hyacinth is slender, and the heart-shaped leaves appear relatively long and thin.

The leaves of the flower are long and oval

Raindrops

4. What are the plants growing by the lake?

There are emergent plants, floating plants and submerged plants.

Emergent plants: lotus, loosestrife, calamus, yellow calamus, water plantain, lily, pickerel grass, variegated reed, cattail, Alisma plant, Cyperus, and reed.

Floating plants: water lily, water hyacinth, big i, water shield, water turtle, and duckweed.

Submerged plants: black algae, duckweed, pondweed, Vallisneria, and water chestnut.

Water shield (water sunflower), water lily, water hyacinth, water grass, Azolla, Water Penzi (Rhizophoraceae), Wulijiao (Rhizophoraceae), Sea Eggplant {(Verbenaceae), Olive Plum (Combretaceae), Red Eggplant {, Fine-stamen Mangrove (Rhizophoraceae), etc.

There are maple poplar, weeping willow, river willow, fine-leaved water lily, spotted grass, miscanthus, reed, yellow iris, water onion, grass, loosestrife, pickerel grass, water lily, windmill grass, etc.

Generally, they are divided into the following categories: emergent plants, floating plants, and submerged plants.

Emergent plants: lotus, Lythrum salicina, calamus, yellow calamus, water plantain, lily, pickerel grass, variegated reed, cattail, oriental water lily, Cyperus rotundus, reed.

Floating plants: water lily, water hyacinth, giant ivy, water lily, water turtle, duckweed.

Submerged plants: Hydrilla, Ceratophyllum, Potamogeton, Vallisneria, Potamogeton

Hope it helps you!!!

5. What are aquatic flowers?

Aquatic flowers are divided into four categories according to the lifestyle and morphological characteristics of aquatic ornamental plants:

1. Emergent aquatic flowers (including wetlands and marshes): The plants are tall, with bright colors, and most of them have stems and leaves; the roots or underground stems grow and develop in the mud, and the upper part of the plant emerges from the water.

Such as: lotus, yellow iris, loosestrife, calamus, cattail, arrowhead, pickerel grass, water calathea (water calathea), etc.

2. Floating-leaf aquatic flowers: They have well-developed rhizomes, large flowers, bright colors, no obvious above-ground stems or stems that are too thin to stand upright. They usually store a large amount of gas in their bodies, which allows the leaves or plants to float on the water.

Such as: water lily, Victoria regia, water lily, water chestnut, water shield, etc.

3. The roots of floating aquatic flowers do not grow in the mud. The plants float on the water surface and drift around with the current and waves. Such as: big i, water hyacinth, water hyacinth, water turtle, water poppy, etc.

4. The rhizomes of submerged aquatic flowers grow in the mud, the entire plant sinks into the water, and has well-developed aeration tissue.

Such as: black algae, duckweed, foxtail algae, bitter grass, and water chestnuts.

The meaning and scope of aquatic flowers:

Aquatic flowers, which come in many varieties, are an important part of ornamental plants in gardens and courtyard waterscapes.

The meaning and scope of aquatic flowers: Aquatic flowers, with a wide variety of species, are an important part of ornamental plants in gardens and courtyard waterscapes. According to the lifestyle and morphological characteristics of aquatic ornamental plants, they are divided into four categories: 1. Erect aquatic flowers (including wet and marsh plants) The plants are tall and colorful, and most of them have stems and leaves; the roots or underground stems are inserted into the mud to grow and develop, and the upper plants stand out of the water. Such as: lotus, yellow iris, loosestrife, calamus, cattail, arrowhead, fish grass, water calathea (water calathea), etc. 2. Floating leaf aquatic flowers have well-developed rhizomes, large flowers, colorful colors, no obvious above-ground stems or stems that are thin and weak and cannot stand upright, and they usually store a large amount of gas in their bodies, so that the leaves or plants float on the water. Such as: water lilies, Victoria amazonica, duckweed, Euryale ferox, water hyacinth, etc. 3. The roots of floating aquatic flowers do not grow in the mud. The plants float on the water surface and drift around with the current and waves. Such as: big i, water hyacinth, water spinach, water turtle, water poppy, etc. 4. The roots and stems of submerged aquatic flowers grow in the mud. The whole plant sinks into the water body and has well-developed aeration tissue. Such as: black algae, duckweed, foxtail algae, Vallisneria, water chestnut, etc.

Lotus, green radish, water bamboo

Lotus

Narcissus