What is the difference between hot polygonum and red polygonum

What is the difference between hot polygonum and red polygonum

1. Leaf Difference

The leaves of Polygonum hydropiper are lanceolate or elliptic-lanceolate, 4 to 8 cm long and about 0.5 to 2.5 cm wide. The leaf apex gradually becomes pointed, the base of the leaf is wedge-shaped, the edge is entire, both sides of the leaf are glabrous, with small brown spots, and the petiole is 4 to 8 mm long.

The leaves of Polygonum multiflorum are broadly ovate, ovate-lanceolate or broadly elliptic, 10 to 20 cm long and 5 to 12 cm wide, gradually becoming pointed at the apex, with a rounded or nearly cordate base and entire margins.

2. Flower Differences

The inflorescence of Polygonum hydropiper is spike-shaped, terminal or axillary, 3 to 8 cm long, usually drooping, with sparse flowers and discontinuous at the bottom. The bracts of the flowers are funnel-shaped, 2 to 3 mm long, and green. The flowers are green with 5 deep lobes and white or light pink on top.

The inflorescence of Polygonum multiflorum is spike-shaped, terminal or axillary, 3 to 7 cm long, with dense, slightly drooping flowers, usually several of which form a cone shape, and the flowers are light pink or white.

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