| Cleistocalyx operculatus | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Division: | Magnoliophyta |
| Class: | Magnoliopsida |
| Order: | Myrtales |
| Family: | Myrtaceae |
| Genus: | Cleistocalyx |
| Species: | C. operculatus |
| Binomial name | |
| Cleistocalyx operculatus (Roxb.) Merr.. et Perry, 1937 |
|
Cleistocalyx operculatus, also known as C. nervosum (DC.) Kosterm. , Eugenia operculata Roxb., 1832, Syzygium nervossum DC., 1828, Syzygium operculatum (Roxb.) Nied., 1893), is a medium sized tree of about 10 meters in height with pale brown bark and dull green leaves.
The tree is native to tropical Asia, extending as far south as the Northern Territory of Australia.
The leaves of C. operculatus are elliptical, obovate and glaborous, measuring 7-9 cm in length.
Flowers cluster as greenish white trichomatous pannicles. The blossoms have 4 petals.
The 7-12 cm diameter fruits are ovoid with a concave tip and a wrinkled texture. The fruits turn purplish upon ripening.
The leaves and buds of C. operculatus are harvested, dried, and brewed as an herbal tea in Vietnam known as "nước vối" with stomachic properties[1].