(1) annual aquatic flowers
Aquatic plants that complete the life cycle from sowing, germination, growth, flowering, fruiting to death within one year. Comprises cress, Euonymus japonicus, Alisma orientalis, Sophora alopecuroides and POTAMOGETON crispus.
(2) Perennial aquatic flowers
The plant life is more than 2 years, the aboveground part withers in winter, and the underground part germinates and grows in the next spring. This kind of flowers can be divided into aquatic perennial flowers (such as Juncus, Iris, Acorus calamus and Umbrella) and aquatic bulbous flowers (including bulbs, tubers, bulbs and rhizomes).
(3) Aquatic ferns
Pteridophytes adapted to glacial environment, such as water fern and Isoetes.
(4) Ecological aquatic flowers with normal humidity and humidity.
Normal humidity ecotype refers to positive plants growing in an environment with moderate air humidity, such as weeping willows and Pterocarya stenoptera. Wet ecotype refers to shade plants that adapt to moderate air humidity, such as tortoise shell bamboo and spring feather.
(5) Ecological aquatic plants with high humidity and high temperature.
Aquatic flowers growing in high temperature and high humidity environment, such as Wang Lian and tropical water lilies.
(6) Aquatic insectivorous plants
Aquatic flowers have special organs to digest small animals, such as sundew.
2. According to lifestyle and morphological characteristics, they are generally divided into four categories.
(1) emergent flowers
Roots or underground stems plunge into the mud to grow and develop, and the upper plants are exposed to the water. Such as reed, rushes, lotus, calamus and arrowheads.
(2) Floating leaf aquatic flowers
Roots or underground stems plunge into the mud to grow and develop, and there are no above-ground stems or the above-ground stems are soft and cannot stand upright, and the leaves float on the water. Such as water lily, Wang Lian, Euryale ferox, etc.
(3) Floating aquatic flowers
Roots don't go into the soil, but plants float on the water, with uncertain positions, floating around with the wind, waves and currents. Such as manjianghong, Dapiao and water hyacinth.
(4) Submerged flowers
Roots or underground stems plunge into the mud to grow and develop, and the upper sound sinks into the water with the plants. Such as Sophora alopecuroides, black algae and cauliflower.
3. According to the cultivation methods, it can be divided into three categories.
(1) cut flowers
Aquatic flowers for the purpose of producing cut flowers. Such as water lily, lotus, iris, etc.
(2) Potted aquatic flowers
Potted ornamental aquatic flowers. Such as lotus, umbrella grass, taro and so on.
(3) Landscape aquatic flowers
Aquatic flowers as landscape and water landscape. Such as cattail, calamus, water onion, etc.