Polygonum persicum

Polygonum persicum plant morphology: annual herb, 40-80 cm high. The lower part of the stem is recumbent, the upper part is erect or the whole plant is erect, simple or branched. The stipule sheath tightly wraps the stem, sparsely furred, with long cilia on the upper edge; The petiole in the upper part of the stem is very short or nearly absent, and the petiole in the lower part of the stem is obvious with bristles; Leaf blade lanceolate or linear-lanceolate, 4-10 cm long, 5-20 mm wide, wedge-shaped at the base, tapering at the apex, smooth or sparsely hairy on both sides, with bristles on midvein and edge. Racemes constitute panicles, terminal or axillary; Peduncle is slightly glandular, with dense flower spikes, 1.5-5 cm long, thick and erect; Bracts funnel-shaped, reddish purple, apex oblique, sparsely ciliate, perianth pink or white, 5-parted, about 3 mm long, imbricate arrangement, stamens 5-7, usually 6, pollen grains spherical, diameter 30 microns, with reticulate ornamentation; Nuts are broadly ovoid, flat or slightly convex on both sides, sparsely trigonous, dark brown and shiny, with 2n = 22,44 chromosomes. Born in the forest water wetland. It is distributed in Heilongjiang and Jilin provinces in China, and also in Europe, Asia, Africa and America.
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