Panicum miliaceum. The stem takes root by creeping, with many branches, and the length can reach 1 m. The lower part is hairless and the upper part is short. Leaves lanceolate to ovate-lanceolate; The involucral bracts are spoon-shaped, with a stalk of 1.5-4 cm, opposite to the leaves, folded, heart-shaped after unfolding, and short and pointed at the top;
Cymes, the lower branch is only 1 flower, the pedicel is 8 mm long and sterile; There are 3-4 flowers on the upper branch, and the peduncle is short, hardly sticking out the Buddha bud. Pedicel is only 3 mm long, with curved fruit, membranous sepals, dark blue petals and 2 claws on the inside.
Capsule oval, 5-7 mm long, 2-loculed, 2-valved, with 4 seeds. The seeds are 2-3mm long, brownish yellow, with one end truncated, flat ventral surface and irregular pits.
Extended data:
Growth habit
Common in wetlands, it has strong adaptability and can grow in full light or semi-shade environment. But it can't be cloudy, otherwise the leaves will turn pale pink green. I like warm and humid climate and avoid sun exposure. The optimum growth temperature is 20~30℃, the night temperature is 10~ 18℃, and the winter temperature is not lower than 10℃.
The requirements for soil are not strict, and the drought tolerance is strong. The soil can grow when it is slightly wet. If the basin soil is too wet for a long time, it is easy to rot the stems and leaves.
Mainly distributed in the tropics, a few species are produced in subtropical and temperate regions. There are 49 species 13 genera in China, which are mainly distributed in the provinces south of the Yangtze River, especially in the southwest. Yunnan, Sichuan and Gansu provinces. Vietnam, Japan, Russian Far East and North America are also distributed.