1, it should be gallnut, not gallnut. Rhus chinensis (Flora of China), English name: Nutgall Tree, Chinese alias: Chinese gallnut (Syzygium chinensis, Pistacia chinensis) is a small deciduous tree belonging to Rhus of Uraciaceae. Rhus chinensis is the main economic tree species in China, which can be used as raw materials for medicine and industrial dyes. Its skin and seeds can also be pressed for oil. In landscaping, it can be used as a kind of ornamental fruit tree. It blooms from August to September and is rich in nectar powder, so it is a good nectar source plant. Roots, leaves, flowers and fruits can all be used as medicine, and have the effects of clearing away heat and toxic materials, relaxing muscles and tendons, activating collaterals, removing blood stasis, stopping bleeding, astringing intestines and stopping diarrhea.

2. Morphological characteristics: small deciduous trees, 2- 10 m high; Branchlets brown, rust-colored pilose, with round lenticels. Odd-pinnate compound leaves have 3-6 pairs of leaflets, which are papery, with rough serrated edges, densely covered with grayish brown hairs on the back, with broad leaflike wings on the leaf axis, and the leaflets gradually increase from bottom to top, and the leaf axis and petiole are rusted. Leaflets are polymorphic, ovoid or oval, ovoid or oblong, 6- 12 cm long and 3-7 cm wide, with sharp apex and rounded base. The terminal leaflets are wedge-shaped at the base, with coarse serrations or rounded teeth at the edge. The leaves are dark green, with white powder on the back, fluffy or nearly hairless along the midvein, with rust-colored fur on the back, dense veins and side. Leaflets sessile.

3. The panicle is wide and branched, the male inflorescence is 30-40 cm long, and the female inflorescence is short and densely rusted; Bracts lanceolate, about 65438 0 mm long, puberulent, bracteoles small, flowers milky white, pedicels about 65438 0 mm long, puberulent; Male flowers: the calyx is puberulent, the lobes are oval, about 1 mm long, and there are fine eyelashes on the edge; Petals obovate-oblong, about 2 mm long, spreading when flowering; Stamens elongated, filaments linear, about 2 mm long, glabrous, anthers ovate, about 0.7 mm long; Ovarian infertility; Female flower: calyx lobes are short, about 0.6 mm long, puberulent outside, with fine eyelashes at the edge; Petals elliptic-ovoid, about 1.6 mm long, with fine eyelashes at the edge and pilose inside and outside; Stamens are very short; Disk glabrous; Ovary ovoid, about 65438 0 mm long, densely white puberulent, style 3, stigma capitate.

4. Drupe is spherical, slightly flat, 4-5 mm in diameter, with many nodes and glandular hairs. It is red at maturity and 3-4 mm in diameter. Flowering period is July-September, and fruiting period is10-165438+1October.