Scientific name Erodium stephanianum Willd. The genus (Niulong) is an annual or new-year herb. Alias ​​sun flower. Distributed in the northern and Yangtze River basin provinces. The main damage crops.

Morphological characteristics The stems are decentralised from the base and tiled or obliquely stretched, plant height 15-46 cm. The leaves are long-stemmed; the leaves are two-pseudo-lobed, pinnae strips, or 1-3 coarse teeth. Umbrellas axillary, stalks slender, with 2-5 flowers; respectfully oblong, apex growing mans; there are 5 light purple blue petals, dark purple stripes. The pods have a long beak. After ripening, the 5 fruit flaps are separated from the central axis, and the ankle is spirally curled. Seeds oblong, brown.

Ecological features were born on farmland, wasteland, or roadsides.

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