Sycamore tree, Chinese medicine name. It is the twig and leaf of Syzygium bungeanum of Verbenaceae. After flowering in August ~1October, or before flowering in June ~ July, cut flower branches and leaves, bundle them, and dry them in the sun.
Chinese scientific name: Syzygium bungeanum alias: Syzygium bungeanum, Haizhou Changshanmen: Angiosperma
Class: Dicotyledonous Plants. Scrophulariaceae: Verbenaceae: Isatis: Haizhou Changshan Distribution: Jiangsu, Anhui and other places.
Harvest time; Picking dosage before and after flowering: 9 ~15g
Shrub or small tree, height1.5-10m; Young branches, petioles, inflorescence axes, etc. are somewhat yellow-brown pilose or nearly hairless, while old branches are gray-white, lenticellate, pith-white, and have pale yellow lamellae. The leaves are papery, ovate, ovoid-elliptic or triangular-ovate, 5-16cm long and 2-13cm wide, tapering at the top, with a broad wedge-shaped to truncated base, occasionally heart-shaped, dark green on the surface, light green on the back, white pubescent on both sides when young, smooth and hairless when old, and still pubescent or hairless on the back, or along veins. The petiole is 2-8 cm long. Umbrella-shaped cymes are terminal or axillary, usually bifurcated and scattered, with 3 flowers branched at the last time, the inflorescence is 8- 18 cm long, and the peduncle is 3-6 cm long, which is somewhat yellow-brown or hairless; Bracts leaflike, elliptic, caducous; Calyx buds are green and white, then purple-red, the base is United, the middle is slightly enlarged, with 5 ridges, the top is 5-parted, the lobes are triangular-lanceolate or ovate, and the top is pointed; Flower fragrance, white or pink corolla, thin corolla tube, about 2 cm long, 5-lobed at the top, long oval lobes, 5- 10 mm long and 3-5 mm wide; Stamens 4, filaments and styles extending out of the corolla; Style shorter than stamens, stigma 2-lobed. Drupe is nearly spherical, 6-8 mm in diameter, enclosed in enlarged persistent calyx, and the exocarp is blue-purple when mature. The flowering and fruiting period is 6- 1 1 month.
The coat condition of this species is changeable, the calyx bud is green and white, and then it gradually turns purple, so the two varieties separated in the past are merged.