Introduction of Gleditsia sinensis varieties

1. G.melanacanthaTangetWang: its main characteristics are gray-green branchlets, glabrous, branched spines, but slightly compressed, black-brown. A pinnately compound leaf, with 6-22 leaflets, margin finely serrate. Dioecious, pods striate, papery, brownish-black, twisted, 20-30 cm long.

two。 Japanese Gleditsia (G.japonicaMiq.): similar to Gleditsia mandshurica, the main difference between Gleditsia japonica and Gleditsia mandshurica is that the branchlets of this species are green brown to reddish brown. The leaflet is obviously larger and thicker than the mountain pod, and the leaves on the new branches are bipinnately compound, and the pod is long, flat, twisted and bubble-shaped.

3. G.officinalisHemsl: this species is similar to Gleditsia, with dark gray-black dry skin, deep longitudinal cracks, single or branched thorns, conical, reddish brown, usually growing densely at the bifurcations of old branches, branchlets gray, lenticels conspicuous, compound leaves even-pinnate, 6-16 leaflets, irregular serrulate margin, petiolules densely brown tomentose. Two types of pods: small sickle-shaped, thick and seedless; large fruit flat, straight or slightly curved, with several seeds. Both large and small fruits have a long beak. Ripe reddish brown covered with frost powder. Shandong Zoucheng specialty tree species, pods used in medicine.

4. G.heterophyllaBunge: mostly shrubs with gray bark. More than two branches prickly, thin and short. The current year's branches are densely gray-yellow pubescent, primary or bipinnately compound leaves, not accounting for 10-28, leaves small, only 0.8-1.2 cm long, axillary or terminal spikes, flowers white, pods with long stalks, long oval, flat and thin, with beak tip, reddish brown after maturity, 1-3 seeds, mostly used as hedges.