Baccaurea motleyana
Baccaurea motleyana
Rambai (Baccaurea motleyana (Müll.Arg.) Müll.Arg., 1866) is a tree species belonging to the family Phyllanthaceae.
Systematics –
Domain Eukaryota,
Kingdom Plantae,
(clade) Angiosperms,
(clade) Mesangiosperms,
(clade) Eudicots,
(clade) Central Eudicots,
(clade) Superrosids,
(clade) Rosids,
(clade) Eurosids,
(clade) COM,
Order Malpighiales,
Family Phyllanthaceae,
Genus Baccaurea,
Species B. motleyana.
The following is a basionym:
– Pierardia motleyana Müll.Arg.
The following is a synonym:
– Baccaurea pubescens Pax & K. Hoffm.
Etymology –
The term Baccaurea refers to the production of berries, a distinctive feature of its species.
The specific epithet motleyana owes its name to the British botanist James Motley, who collected the species in southeastern Borneo.
Geographical Distribution and Habitat –
Baccaurea motleyana is native to tropical Southeast Asia. It grows wild in Thailand, peninsular Malaysia, Singapore, and the large islands of Sumatra, Borneo, and Java; it is also present in the Philippines and some areas of the Pacific. Outside its native range, it is also cultivated in India and Bangladesh.
Rambai is typical of primary and secondary rainforests, where it thrives in warm, humid climates. It prefers terrestrial environments but is closely linked to water: it grows particularly vigorously along rivers and freshwater streams, tolerating periodically flooded lands. Seed dispersal and pollination occur mainly through fauna, confirming the close ecological relationship with the tropical forest environment.
Description –
Baccaurea motleyana is a medium-sized evergreen tree. Under favorable conditions, it can reach 15–25 meters in height, although it is more common at around 9–12 meters, with a trunk that can reach 40 cm in diameter. The broad, rounded crown is often low and bushy, giving the plant an irregular yet harmonious appearance.
The leaves, alternate and with a long petiole, have leathery blades of variable shape, from elliptical to obovate, and can exceed 30 cm in length. The upper surface is glossy green, while the lower surface is lighter, sometimes greenish-brown, and slightly hairy. The species is dioecious: male and female flowers develop on separate plants. Both are fragrant and characterized by creamy-yellow hues; the male inflorescences form shorter racemes, while the female ones can reach considerable length.
The fruits grow in pendulous clusters. They are small, fleshy berries, about 2–5 cm long, with a velvety skin that can vary in color—pink, yellow, cream, or brown—and tends to wrinkle when ripe. Inside is a whitish pulp with a sweet-tart flavor, generally containing one to three seeds, sometimes up to four or five. The fruit, rather delicate, lasts only a few days after harvest.
Although it lacks the commercial fame of better-known tropical species such as mango (Mangifera indica), durian (Durio zibethinus), or langsat (Lansium parasiticum), Rambai maintains a significant role in local economies.
Cultivation –
Baccaurea motleyana is a moderately growing perennial that prefers full sun and regular watering, while also showing good adaptability to moist soils and areas subject to periodic flooding.
It is grown primarily locally, both for its fruit and as a shade tree in gardens, parks, and roadsides. Its broad foliage and fragrant flowers enhance its ornamental value. However, its timber is considered of modest quality and has limited uses.
Uses and Traditions –
Baccaurea motleyana has different local names in its various regions: in Thailand, it is known as mafaifarang, in Bengali as lotka, lotkon, or bubi, while in Assamese, it is called leteku. In Indonesia, it is often referred to as Rapun Rambai.
The Rambai fruit is eaten fresh or used in various traditional preparations. It can be cooked, made into jam, or fermented to make wine. In some communities in Kalimantan, especially during the COVID-19 pandemic, the fruit has been used to produce a syrup believed to support the immune system thanks to its vitamin content, including vitamin C.
Beyond its culinary use, the plant plays a significant role in traditional medicine. Various parts are used in herbal medicine: the stem to treat swollen eyes, the bark to relieve skin inflammation, and the leaves for applications on burns, ringworm, or smallpox-related skin conditions. The fruit peel contains compounds such as alkaloids, phenols, and flavonoids, known for their antioxidant and antimicrobial properties. Experimental animal studies have highlighted the potential use of the peel juice in diabetes management, but have also shown that high doses can be hepatotoxic, necessitating cautious use and further scientific investigation.
In some communities in West Kalimantan, such as the Dayak Banyadu, the fruit peel is also consumed, demonstrating the widespread traditional use of the plant.
Preparation or Use –
Baccaurea motleyana is a plant whose fruits can be eaten. Fresh consumption involves manually opening the velvety skin and extracting the pulp, which is separated from the seeds. To make traditional syrup, the pulp is boiled with water and sugar, filtered, and then bottled. Jam is obtained by cooking the pulp with sugar until the desired consistency is reached.
Traditionally, the plant parts intended for therapeutic use are generally used in the form of decoctions, juices, or local compresses, according to practices passed down from rural communities in Southeast Asia.
Guido Bissanti
Sources
– Acta Plantarum – Flora of the Italian Regions.
– Wikipedia, the free encyclopedia.
– GBIF, the Global Biodiversity Information Facility.
– Useful Tropical Plants Database.
– Conti F., Abbate G., Alessandrini A., Blasi C. (eds.), 2005. An annotated checklist of the Italian vascular flora, Palombi Editore.
– Pignatti S., 1982. Flora of Italy, Edagricole, Bologna.
– Treben M., 2000. Health from the Lord’s Pharmacy, Advice and Experiences with Medicinal Herbs, Ennsthaler Editore.
Photo source:
https://inaturalist-open-data.s3.amazonaws.com/photos/149602132/original.jpg
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Warning: The pharmaceutical applications and dietary uses are provided for informational purposes only and do not in any way constitute medical prescriptions. We therefore decline any responsibility for their use for curative, aesthetic, or nutritional purposes.