Gnetum gnemon
A gymnosperm tree with fruit-like seeds and culinary uses across Southeast Asia.
Gnetum gnemon is a gymnosperm species of the genus Gnetum, native to a broad region extending from Mizoram and Assam in India, through the Malay Peninsula and Archipelago, the Philippines, and into the western Pacific islands. Unlike most other Gnetum species, which grow as lianas, this species takes the form of a small to medium-sized tree, reaching heights of 15 to 22 metres with a trunk diameter up to 40 centimetres. In addition to the tree form, shrub varieties such as brunonianum, griffithii, and tenerum also exist. The evergreen leaves are opposite, entire, and measure 8 to 20 centimetres long by 3 to 10 centimetres broad, emerging bronze and maturing to a glossy dark green. The plant does not produce flowers; instead, it bears male and female sporing organs on single stems 3 to 6 centimetres long. The male strobili are small and arranged on long stalks, often mistaken for flowers, while the female strobili, after fertilization, develop into the fruit-like seeds. These oval seeds, technically a fleshy seed, are 1 to 3.5 centimetres long, consisting of a thin velvety integument and a large nut-like endosperm 2 to 4 centimetres long. The seeds weigh about 5.5 grams, with the endosperm alone weighing 3.8 grams, and they change colour from yellow to orange, purple, or pink when ripe. In Indonesia, the fruiting season occurs three times a year, while in the northeastern Philippines it is mainly from June to September. The seeds are commonly eaten boiled, roasted, or raw across Southeast Asia and Melanesia. The young leaves, male strobili, and outer flesh of the fruit are also edible when cooked and are used in soups and stews in Indonesia, the Philippines, Thailand, Vanuatu, Papua New Guinea, the Solomon Islands, and Fiji. In Indonesian cuisine, known as melinjo or belinjo, the seeds are used in sour vegetable soup and to make emping, a type of deep-fried cracker. The plant is also cultivated in Aceh, where its male strobili, young leaves, and female strobilus are ingredients in traditional curries served on important occasions.
- species
- Gnetum gnemon
- type
- Small to medium-size tree (15–22 m tall, trunk up to 40 cm diameter)
- native_range
- Mizoram and Assam (India) through Malay Peninsula, Malay Archipelago, Philippines to western Pacific islands
- common_names
- Gnetum, joint fir, two leaf, melinjo/belinjo (Indonesian), bago/lumbay (Filipino), hanthu (Karbi), tulip (Tok Pisin)
- uses
- Culinary (seeds, leaves, male strobili, fruit flesh); source of stilbenoids including resveratrol
Lore & Background
Gnetum gnemon is a small to medium-size tree, growing 15–22 metres tall with a trunk diameter up to 40 cm. Unlike most other Gnetum species, which are lianas, it takes a tree form, though shrub varieties (brunonianum, griffithii, and tenerum) also exist. Its leaves are evergreen, opposite, 8–20 cm long and 3–10 cm broad, emerging bronze and maturing glossy dark green. The tree does not flower but produces male and female sporing organs on single long stems 3–6 cm long; male strobili are small and arranged on long stalks often mistaken for flowers, while female strobili, when fertilized, produce the fruit-like seeds.
Reader's Guide
Gnetum gnemon holds significance as a versatile food plant across Southeast Asia and Melanesia. Its nuts are eaten boiled, roasted, or raw, and its young leaves, male strobili, and outer fruit flesh are cooked and used in soups and stews in Indonesia, the Philippines, Thailand, Vanuatu, Papua New Guinea, the Solomon Islands, and Fiji. In Indonesian cuisine, known as melinjo or belinjo, the seeds are used in sayur asem (sour vegetable soup) and made into emping crackers, a type of krupuk with a slightly bitter taste. The plant is commonly cultivated in the Aceh region, where it is regarded as a high-status vegetable; its male strobili, young leaves, and female strobilus are ingredients in kuah pliek, a traditional curry served at important occasions. In the Pidie district, women make keureupuk muling from red-skinned ripe fruit. Beyond culinary use, the species is a source of stilbenoids, including resveratrol and gnemonosides, which have been studied for antibacterial, antioxidative, and immune-modulating properties, suggesting potential applications in natural food preservation and health.
Did You Know?
- Gnetum gnemon is a gymnosperm, but its fruit-like female strobili and flower-like male strobili often cause it to be mistaken for an angiosperm due to convergent evolution.
- The tree does not flower; it produces male and female sporing organs on single long stems 3–6 cm long.
- In Indonesia, melinjo season occurs three times per year: March–April, June–July, and September–October.
- The seeds are used to make emping, a type of deep-fried cracker with a slightly bitter taste.
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