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Family Euphorbiaceae
Reutealis trisperma (Blanco) Airy Shaw

San zi tong

Scientific names Common names
Aleurites saponaria Blanco Bagilumbang (Tag.)
Aleurites trisperma Blanco Balukanag (Ilk., Bis., Tag.)
Camerium trispermum (Blanco) Kuntze Banukalad (Tag.)
Reutealis trisperma (Blanco) Airy Shaw Banunkalag (Tag.)
  Balokanad (Tag.)
  Lumbang (Bik.)
  Lumbang-banukalad (Tag.)
  Kalumban (Tag.)
  Lumbang-gubat (Tag.)
  Lumbang tree (Engl.)
  Otaheite walnut (Engl.)
  Philippine tung tree (Engl.)
  Soft lumbang (Engl.)
Lumbang is a common names shared by both Aleurites moluccana and A. trisperma.
Aleurites trisperma Blanco is a synonym of Reutealis trisperma (Blanco) Airy Shaw The Plant List
Reutealis trisperma (Blanco) Airy Shaw is an accepted name The Plant List

Other vernacular names
CHINESE: San sejin, San zi tong.
INDONESIAN: Kemiri sunan.

Bagilumbang is a tree growing to a height of 10 to 15 meters or more. It does not have hairs, except for the inflorescences. Leaves are suborbicular to broadly ovate,10 to 20 centimeters long, entire, with a broadly cordate base. Flowers are 10 to 12 millimeters in diameter, the petals obovate, densely hairy without, borne on panicles about 15 centimeters long. Fruit is somewhat rounded and angled, 5 to 6 centimeters in diameter, opening later along the angles, usually 3-celled and each containing a single seed. Seed is somewhat circular, flattened, rather smooth, with numerous small ridges, with a hard brittle shell about 0.5 millimeter thick. Within the shell is a white, oily, fleshy kernel with a very think embryo surrounded by a large endosperm. Kernel is covered by a thin, white, paperlike seed coat.

- Widely scattered in forests at low and medium altitudes in La Union, Laguna, Cavite, Batangas, Quezon, Rizal, and Camarines Provinces in Luzon; in Negros; and in Mindanao.
- Sometimes, planted.

- In India, commercially cultivated for its tung oil.
- Planted in tropical and subtropical areas.
- In Taiwan, planted as a garden or shade tree.

- The seeds, like other Aleurites species, yield a high percentage of oil.
- Constants are similar to tung oil.

- Kernel yields as high as 56 % of oil.
- In the genus Aleurites, plant is a significant source of conjugated fatty acid, eleostearic acid (38%).

- More suitable for varnish making than tung oil; although with very poor keeping qualities.
- Seed is purgative.
- Fresh kernels have a nutty flavor but causes a burning sensation in the mouth, throat, esophagus and stomach. Even a small part of the nut can cause violent vomiting within half an hour, or a terrible diarrhea, a few hours after eating and lasting 12 to 24 hours.

Parts used
Seed, bark sap.


- Seed is a strong purgative.
- Bark sap is used as a cure for scurf (dandruff); also used as hair tonic.
- Insecticide: Oil for the seeds is an effective insecticide.
- Soap: Seed from oil is a natural soap with weak cleaning function.

Radical Scavenging:
Study evaluated methanolic extracts of 35 plants for radical scavenging activity using DPPH and ABTS assays. Aleurites trisperma was one of four that showed very strong radical scavenging activity in both assays.
Oil Yield / Biodiesel Potential:
Study evaluated the suitability of various non-edible oil seeds (jatropha, neem, moringa, trisperma, castor beans and candlenut) for integral utilization of fractions for production of biodiesel and other products. The highest oil content (62% w/w) was found in trisperma seeds. However, use of the oil for biodiesel production was restricted by its high content of polyunsaturated fatty acids.
Seeds / Allergenic Properties:
Contact dermatitis has been reported from the foliage of all species of Aleurites. Ingestion can cause a whole range of gastrointestinal symptoms: burning in the throat and mouth, nausea, vomiting, cramps, diarrhea, dehydration. Ingestion of seeds has been reported to cause poisoning and death in livestock.
Potential of Seed as Source for Biodiesel Production: Study evaluated the potential of non-edible R. trisperma oil as a new carbon source for biodiesel synthesis. (10)
Optimization of Biodiesel Production from Reutealis trisperma Oil: R. trisperma oil is an attractive material for production of biodiesel. Study investigated the optimization of biodiesel production from R. trisperma oil using NaOH as catalyst. (11)

Toxicity / Concerns
Fruit is poisonous.
Fresh kernels have a pleasant nutty flavor, but cause a burning sensation in the mouth, throat, esophagus, and stomach. A part of one nut can cause violent vomiting within an hour or severe diarrhea, a few hours after ingesting and lasting 12 to 24 hours. (
Minor Products of Philippine Forests / Brown. W. H. / Bureau of Forestry, Manila, 1920) (8)

- Wild-crafted.
- Cultivated in southeast Asia for its seed oil.

Godofredo U. Stuart Jr., M.D.

Last Update April 2016

IMAGE SOURCE: Minor Products of Philippine Forests / Vol 2 / William Brown and Arthur Fisher / Figure 46 / Aleurites trisperma (Bagilumbang), The Source of Bagilumbang Oil / 1920 / Modifications by G. Stuart / Public Domain
OTHER IMAGE SOURCE: File:Reutealis trisperma Blanco2.296-original.png / Flora de Filipinas / Franciso Manuel Blanco (OSA), 1880-1883 / Wikimedia Commons
Additional Sources and Suggested Readings
Bagilumbang or soft lumbang (Aleurites trisperma) oil / G. S. Jamieson and R. S. McKinney / JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY, Volume 12, Number 7, 146-148, DOI: 10.1007/BF02636731 / A Paper Presented at the 26th Annual Meeting of the American Oil Chemists' Society, at Memphis, Tenn., May 23–24, 1935.
Tung Flower Study: Doctor of tung flower leads you to the secrets of tung flower / 2010 Hakka Tung Blossom Festival
PRODUCTION OF UNUSUAL FATTY ACIDS IN PLANTS / David Hildebrand / Plant Lipid Biochemistry
Evaluation of radical scavenging activity of certain plant extracts using cell free assays / R.M. Samarth* and Vivek Krishna / Pharmacologyonline 1: 125-137 (2007)
Studies conducted at University of Matanzas on oil and gas recently published / Ol and Gas /
Energy Business Journal
Lumbang Nut / Aleurites trisperma / Common Allergy Triggers in Georgia / Data from Betrock Information Systems
Reutealis trisperma / Synonyms / The Plant List
Reutealis trisperma / Useful Tropical Plants
Reutealis Airy Shaw Euphobiaceae / CRC World Dictionary of Medicinal and Poisonous Plants: Common Names / Umberto Quattrocchi
The potential of Reutealis trisperma seed as a new non-edible source for biodiesel production / Holilah, Holilah; Didik, Prasetyoko; Titie, Oetami; Eka, Santosa; Yusuf, Zein; Hasliza, Bahruji; Hamzah, Fansuri; Ratna, Ediati; Juwari, Juwari / Biomass Conv. Bioref. (2015) 5:347-353
It is not uncommon for links on studies/sources to change. Copying and pasting the information on the search window or using the DOI (if available) will often redirect to the new link page.

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