morphological character
Water chestnut, also called water chestnut. The two horns are diamonds, shaped like horns. Triangle and four corners are cockroaches. Growing in a lake. Horseshoe grows most easily when it falls in mud. There are Yeling and Jialing, both born in March, which have been passed down for a long time. The leaves floating on the water are flat, sharp and very smooth, and there are stems below. Small white flowers bloom in May and June, open at night, close during the day and move with the month. There are several kinds of fruits: hornless, double-angled, triangular and four-angled. There are thorns on the corners, which are thin and brittle and grow on the corners. Aquatic plants. Annual floating or semi-erect aquatic plants. Root type 2: iron wire with mud roots, planted in sediment; Assimilated roots, pinnately divided, filiform lobes, light green or dark reddish brown. The stem is cylindrical, slender or stubby. Leaf type 2: floating leaves alternate and cluster at the tip of the stem, forming a rosette diamond on the water surface.
leaf
The leaves are rhombic in width, 3-4.5 cm long and 4-6 cm wide, with dark green surface, hairless back, green or purplish red, densely covered with fawn short hair (young leaves) or grayish brown short hair (old leaves), and concave shallow teeth in the middle and upper parts of the edges.
The lower part of the edge is full and the base is wide wedge-shaped; Petiole length is 2-10.5 cm; The middle and upper parts expand into sponge-like airbags with short hair; Submerged leaves are small and fall early.
flower
Flowers are small, solitary in leaf axils, and pedicels are 1- 1.5 cm long; Calyx tube is 4-lobed, with only a pair of calyx hairs, of which 2 lobes evolved into horns; Petals 4, white, inserted at the edge of the upper disk; Stamens 4,
Water chestnut flower
Filaments are slender, anthers are T-shaped, carrying drugs and introverted; Pistil 2-carpellate, 2-loculed, ovary semi-inferior, style subulate, stigma capitate.
fruit
The fruit has two horizontally spread shoulder angles, without barbs or barbs, and the top is bent downward, with a width of 7-8 cm between the two angles. The fruit is trumpet-shaped, with a height of 2.5-3.6 cm. The young skin on the fruit surface is purple-red, purple-black when it is ripe, and the micro-quilt is extremely short.
The fruit beak is not obvious, and the fruit stalk is thick and jointed, with a length of 1.5-2.5 cm. The seeds are white, spindle-shaped, with dark corners and white powder. The flowering period is from April to August, and the fruiting period is from July to September. Also known as "water chestnut". For seed plants.