Echinococcus

Small trees, up to 7 meters high; Branchlets are densely spiny, with spines 7- 14 mm long. The leaves are bipinnately compound, 35-50 cm long or longer; Petiole 25-40 cm long, sparsely spiny; Stipules and petiole base are United, chestnut; The pinna has 5-9 leaflets, and the base has 1 pair of leaflets; Leaflets are membranous to tissue-like, oblong, oval to lanceolate, 4-1/kloc-0.5cm long and 2.5-5cm wide, with long and tapering tips, round to wide wedge-shaped base, oblique, hairless on both sides, grayish white on the lower side, sparse serrated edges, 6-9 pairs of lateral veins, and obvious on the upper side compared with the lower side. Leaflets sessile or almost sessile. Panicle is large, 30-50 cm long, terminal; There are bran-like hairs on the main shaft and branches, and the back hairs fall off; Umbellies are about1.5cm in diameter, with 12-20 flowers and 30 rare flowers. The total length of pedicel is1-5 cm; Bracts ovate-lanceolate, 65438 00 mm long; Pedicel 8-30 mm long; Bracteoles lanceolate, ca. 4 mm long; White flowers; Calyx glabrous, with 5 small oval triangular teeth at the edge; Petals 5, ovoid-triangular, about 2 mm long; 5 stamens, filaments about 4 mm long; Ovary 5-loculed; Style 5, free. The fruit is spherical, 2-3 mm in diameter, with 5 edges; Durable style length 1- 1.5 mm, base integrated. The flowering period is from June to August, and the fruiting period is from September to165438+10.