1. Sheep's hoof beetle: tree or upright shrub, 7-10 meters high; bark is thick, nearly smooth, gray to dark brown; leaves are hard and papery, nearly round, with the apex split up to the length of the leaf. 1/3-1/2, the apex of the lobes is blunt or nearly acute, both sides are hairless or the underside is thinly puberulent. Racemes are lateral or terminal, with few flowers, 6-12 cm long; flower buds are spindle-shaped, with 4-5 ribs or narrow wings, with blunt tops; petals are pink, oblanceolate, 4-5 cm long, Veinsed and long petioles. The pods are band-shaped, flat, slightly sickle-shaped, and dehisce when mature; the seeds are nearly round, flat, and the seed coat is dark brown. The flowering period is from September to November; the fruiting period is from February to March.

2. The goat's hoof is a tree or upright shrub, 7-10 meters high; the bark is thick, nearly smooth, gray to dark brown; the branches are slightly hairy at first, and the hairs gradually fall off, and the leaves are hard and papery. Nearly round, 10-15 cm long, 9-14 cm wide, base shallowly heart-shaped, apex split up to 1/3-1/2 of leaf length, apex of lobes rounded and blunt or subacute, hairless on both sides or thin below puberulent; 9-11 veins emerging from the base; petiole 3-4 cm long.

3. Racemes are lateral or terminal, with few flowers, 6-12 cm long, sometimes 2-4 are born on the top of branches to form compound racemes, covered with brown silk hairs; the number of flower buds Spindle-shaped, with 4-5 ribs or narrow wings, apex blunt; pedicel 7-12 mm long; calyx flame-shaped, split on one side to the base into 2 externally reversed lobes, lobes 2-2.5 cm long, slightly cracked at the apex. One of them has 2 teeth, the other has 3 teeth; the petals are pink, oblanceolate, 4-5 cm long, with veins and long petioles; 3 fertile stamens, the filaments are as long as the petals; 5 staminodes -6, 6-10 mm long; ovary with long stalk, covered with yellow-brown silk hairs, stigma slightly larger, oblique shield-shaped.

4. The pods are belt-shaped, flat, 12-25 cm long, 2-2.5 cm wide, slightly sickle-shaped, cracking when mature, and the woody petals twist to pop out the seeds; the seeds are nearly round. , flat, 12-15 mm in diameter, seed coat dark brown. The flowering period is from September to November; the fruiting period is from February to March.

5. Main value: Garden: many varieties can be used as street trees or greening trees. It is widely cultivated in gardens and sidewalks in subtropical areas of the world. Medicinal uses: The tree, bark, flowers and roots are used medicinally and as a detergent for burns and abscesses. The juice or powder of the young leaves can cure coughs, but the root bark is highly toxic and should not be taken. Sheep's hoof nail has antibacterial, antidiabetic, analgesic, anti-inflammatory, antidiarrheal, anticancer and post-thyroidectomy hormone regulating activity. The leaf extract has ulcer healing properties. This was demonstrated in animal experiments in an ethanol-induced rat gastric ulcer model. In toxicology experiments, no signs of toxicity were found in rats at an oral dose of 5000 mg/kg.