山香（学名：Hyptis suaveolens）又名山粉圆，为唇形科山香属下的一个种。原生于中南美洲热带地区。

其种子泡水后，假种皮会膨涨，外观类似粉圆，可加入冷饮中增添口感及营养价值。

Hyptis suaveolens, pignut or chan, is a branching pseudocereal plant native to tropical regions of Mexico, Central, the West Indies, and South America, as well as being naturalized in tropical parts of Africa, Asia and Australia. It is generally 1–1.5 m (3.3–4.9 ft) tall, occasionally up to 3 m (9.8 ft). Stems are hairy, and square in cross section. Leaves are oppositely arranged, 2–10 cm (0.79–3.94 in) long, with shallowly toothed margins, and emit a strong minty odor if crushed. Flowers are pink or purple, arranged in clusters of 1-5 in the upper leaf axils.