Zanthoxylum laetum
| Zanthoxylum laetum | |
|---|---|
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Sapindales |
| Family: | Rutaceae |
| Genus: | Zanthoxylum |
| Species: | Z. laetum
|
| Binomial name | |
| Zanthoxylum laetum Drake
| |
Zanthoxylum laetum is a species of woody plant from the Rutaceae family. It is native to North Vietnam and Guangdong (Zhanjiang region), Hainan, southwestern Guangxi, and southern Yunnan in China.[1][2][3][4]
Description
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Zanthoxylum laetum is a vine that grows up to 4 meters tall. Its stems and branches have barbs, and there are many spines on the leaf shafts. The plant has short puberulent hairs on the leaf shafts, petioles, and midribs, and the leaflets have scattered transparent oil spots. The leaves have 5-13 leaflets which alternate, whole, ovate or ovate-elliptic, sparsely oblong, 8-15 cm long, 4-7 cm wide, apex caudate long or short pointed, blunt head, slightly concave, symmetrical on both sides, the thinner side is slightly slanted, the leaf surface is bright after drying, the oil spots are not obvious, the midrib is flat or slightly recessed on the leaf surface, the side veins are 9-14 on each side, and the reticulated leaf veins are more obvious; small The petiole is 2-6 mm long. Inflorescences are axillary; pedicels are approximately as long as petals; sepals and petals are 4 pieces; sepals are light purple-green, narrow ovate, less than 1 mm in length; petals are yellow-green, broad ovate, about 4 mm in length; male flowers are threadlike, Yellowish green, 6-8 mm long; staminodes terete, 4-parted; staminodes short linear in female flowers. The fruit stems are 2-5 mm long; the fruits are separated from each other, reddish-brown, and the edges are often purple-red, a single diameter of 7-9 mm, with a beak tip no more than 1 mm long at the top, and the oil spots are recessed after drying, and they are obviously smooth and slight Raised edges. The seeds are nearly spherical, 6-7 mm in diameter, brownish-black, and shiny. Flowering period from March to May, fruit period from September to December. It is found in 500-1200 meters of mountain mixed woods. It grows in limestone mountains and soil mountains. It is common in humid dense forests and climbs on other trees.[2][3]
Uses
In Hainan, its roots and stem bark are used as fish poisoning agents. It is used as a herbal medicine in folk; treats pains such as toothache.[2]