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Tumu
berau
Bruguiera sexangula
Family Rhizophoraceae
updated
Aug 09
Where seen? This tree is not common in Singapore. There
are two on Pulau Tekong, and two at Sungei Buloh and it is being replanted
at Chek Jawa, Pulau Ubin and at Pasir Ris Park. According to Hsuan
Keng, it was previously found in Kranji, Jurong and Tanjong Pasir
Laba. Elsewhere, it is also considered widespread and uncommon throughout
its range. It is found along tidal waterways, coastal fish
ponds that are infrequently inundated. It was formerly called B.
eriopetala. According to Burkill, 'Berau' in Malay suggests yellowness.
Features: Tree up to 12m, sometimes
30m tall. Bark light brown-grey, smooth with a few large corky bumps
(lenticels). The base of the trunk may be flanged and may have well
developed aerial roots, sometimes forming stilt roots and knee roots.
Leaves leathery (8-16cm), stipule yellowish or pale.
Flowers with calyx that has 10-12 lobes usually yellow, yellowish-brown,
never conspicously scarlet although it may be reddish sometimes. Flowers
occur singly. Petals have a blunt tip with 1-2 short bristles or hairless,
white when fresh rapidly turning brown.
According to Tomlinson, the large flowers are pollinated by birds.
The petals of the flower hold loose pollen and are under tension.
When probed at the base, the petal unzips to scatter a cloud of pollen
over the head of the visiting bird.
Propagule develops on the parent plant: fat and angular, ridged hypocotyl
(6-8cm long), narrow at both ends. The calyx lobes are extended away
from the hypocotyl.
Sometimes mistaken for Tumu
(Bruguiera gymnorrhiza) but differs in smaller, thinner leaves
and the flower petal tips are blunt without hairy tassels.
Human
uses: According to Burkill, the developing embryo is cooked,
soaked overnight and then eaten. Juice from the fruits may be used
to treat sore eyes, shingles or treat burns. According to Giersen,
the heavy to very heavy timber is hard and strong. Used for poles
as well as firewood and charcoal. In Sulawesi, the fruits are eaten
after they are soaked and boiled.
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Chek Jawa,
Aug 09
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Chek Jawa,
Mar 09
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Chek Jawa,
Aug 09
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Chek Jawa,
Aug 09
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Chek Jawa,
Mar 09

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Chek Jawa,
Mar 09
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Chek Jawa,
Mar 09
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Links
- Giesen, Wim
and Stephan Wulffraat, Max Zieren and Liesbeth Scholten. 2006.
Mangrove
Guidebook for Southeast Asia (PDF online downloadable).
RAP publication 2006/07 Food and Agriculture Organization of the
United Nations Regional Office for Asia and the Pacific Bangkok.
- Bruguiera
sexangula on the IUCN Red List website: detailed fact
sheet.
References
- Chiou-Rong
Sheue, Jean W. H. Yong and Yuen- Po Yang. 2005. The
Bruguiera (Rhizophoraceae) Species in the Mangroves of Singapore,
Especially on the New Record and the Rediscovery. Taiwania,
50(4): 251-260, 2005 (pdf on the Raffles Museum of Biodiversity
Research website).
- Hsuan Keng,
S.C. Chin and H. T. W. Tan. 1990, The
Concise Flora of Singapore: Gymnosperms and Dicotyledons
.
Singapore University Press. 222 pp.
- Tomlinson,
P. B., 1986. The
Botany of Mangroves
Cambridge University Press. USA. 419 pp.
- Burkill,
I. H., 1993. A
Dictionary of the Economic Products of the Malay Peninsula
.
3rd printing. Publication Unit, Ministry of Agriculture, Malaysia,
Kuala Lumpur. Volume 1: 1-1240; volume 2: 1241-2444.
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