Syzygium nervosum

Syzygium nervosum
In Hong Kong
Conservation status
Least Concern  (IUCN 3.1) [1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Rosids
Order:	Myrtales
Family:	Myrtaceae
Genus:	Syzygium
Species:	S. nervosum
Binomial name
Syzygium nervosum DC. [2] [3]
Synonyms [3]
35 synonyms Cleistocalyx nervosus(A.Cunn. ex DC.) Kosterm. Eugenia nervosa(A.Cunn. ex DC.) Bedd. Calyptranthes costataBuch.-Ham. ex Wall. Calyptranthes cuneataBuch.-Ham. ex Wall. Calyptranthes grandisBuch.-Ham. ex Wall. Calyptranthes makulBlanco Calyptranthes mangiferifoliaHance ex Walp. Calyptranthes tatnaBuch.-Ham. ex Wall. Calyptranthes zuzygiumBlanco Cleistocalyx cerasoides(Roxb.) I.M.Turner Cleistocalyx cerasoides var. paniala(Roxb.) I.M.Turner Cleistocalyx nervosus var. paniala(Roxb.) J.Parn. & Chantaranothai Cleistocalyx operculatus(Roxb.) Merr. & L.M.Perry Cleistocalyx operculatus var. paniala(Roxb.) Chantar. & J.Parn. Eugenia cerasoidesRoxb. Eugenia clausaC.B.Rob. Eugenia divaricatocymosaHayata Eugenia giganteaRidl. Eugenia holtzeanaF.Muell. Eugenia holtzeiF.Muell. Eugenia operculataRoxb. Eugenia operculata var. cerasoides(Roxb.) Craib Eugenia operculata var. obovataKurz Eugenia operculata var. paniala(Roxb.) King Eugenia panialaRoxb. Eugenia suavisRidl. Syzygium cerasoides(Roxb.) Chatterjee & Kanjilal Syzygium cerasoidesRaizada Syzygium nervosum var. obovatum(Kurz) A.Kumar Syzygium nervosum var. paniala(Roxb.) Craven & Biffin Syzygium nodosumMiq. Syzygium operculatum(Roxb.) Nied. Syzygium operculatum var. obovatum(Kurz) Gamble Syzygium polyanthumThwaites Syzygium suave(Ridl.) Widodo Syzygium wallichianumC.Presl

Syzygium nervosum is a species of tree native to tropical Asia and Australia, extending as far north as Guangdong and Guangxi in China and as far south as the Northern Territory of Australia. ^[2] It was previously known as Cleistocalyx operculatus, C. nervosum, and Eugenia operculata, and it has many other synonyms. It is a medium-sized tree of about 10 meters in height with pale brown bark and dull green leaves.

Description

The leaves of S. nervosum are elliptical, obovate and glabrous, measuring 7–9 cm in length. Flowers cluster as greenish white trichomatous panicles. The blossoms have 4 petals. The 7–12 mm diameter fruits are ovoid with a concave tip and a wrinkled texture. The fruits turn purplish upon ripening.

Uses

In Vietnam the leaves and buds of S. nervosum are harvested, dried, and brewed as an herbal tea known as "nước vối" with stomachic properties. ^[4]

Gallery

• 
  Ripe fruit in Nepal
• 
  Fruit in Panchkhal Valley, Nepal
• 
  Bark close-up
• 
  Flower in May

References

1. Botanic Gardens Conservation International (BGCI).; IUCN SSC Global Tree Specialist Group (2018). "Syzygium nervosum". IUCN Red List of Threatened Species . 2018 e.T130887438A130907831. doi: 10.2305/IUCN.UK.2018-2.RLTS.T130887438A130907831.en . Retrieved 19 November 2021.
2. "Syzygium nervosum". Australian Plant Name Index (APNI). Centre for Australian National Biodiversity Research, Australian Government . Retrieved 3 October 2025.
3. "Syzygium nervosum DC". Plants of the World Online . Board of Trustees of the Royal Botanic Gardens, Kew. 2025. Retrieved 3 October 2025.
4. Nguyen, Duong Van. Medicinal Plants of Vietnam, Cambodia, and Laos. Santa Monica, CA: Mekong Printing, 1993.