皮孫木屬常綠喬木，臺灣原生，印尼爪哇、馬來西亞至澳大利亞、波里尼西亞亦有分佈。樹皮平滑，灰色。葉對生或近輪生，密集叢生於小枝條先端，卵形，闊卵形至長橢圓形，全緣。花多數，白色，雌雄異株，頂生複聚繖花序或假繖形花序。果紡鎚形，無刺，有肋5條，成熟時由綠轉為黑褐色且肋間分泌黏質液，黏性極強。

An evergreen tree in the genus Pisonia, native to Taiwan and also distributed from Java Indonesia, Malaysia to Australia, and Polynesia. Bark smooth and gray. Leaves opposite or nearly whorled, densely tufted at the end of branchlets, ovate, broadly ovate to oblong, entire. Flowers numerous, white, dioecious, Cymes terminal or pseudo umbels. Fruit spindle-shaped, spineless, with 5 ribs, turning from green to black-brown and exuding incredibly sticky mucous between the ribs when mature,

適合全日照或半日照溫暖環境，土壤以富含有機質的壤土且排水良好者為宜。以種子或扦插或壓條繁殖。

Suitable for Full sun or warm environments with partial sunlight, preferably the soil rich in organic matter loam and well drained. Propagated from seeds, cuttings or layering.

可作庭園景觀樹、行道樹。外國選育斑葉品種，觀賞價值高，作為熱帶地區的庭園樹或盆栽欣賞。

It can be grown as a garden ornament tree and street tree. The variegated cultivars bred in other countries have high ornamental value. In tropical regions, they are grown in gardens or in pots to add interests.