Small clumps of this distinctive knobbly seaweed is sometimes seen
on many of our shores, on bare sand or attached to rocks and coral
Features: 'Stem' made up of succulent
club-shaped structures (each about 1-3cm long) joined together. May
form loose clusters of long 'stems' (10-15cm)'. Or dense clumps of
short 'stems' (1-3cm) growing low against rock or coral rubble. Black
or brownish with only the slightest tinge of red, sometimes yellowish
Human uses: It is used as animal
feed, and fertiliser for coconut trees and coffee bushes in China,
India and Sri Lanka. Like other Gracilaria species, it is also
a source of agar-agar and is eaten as
a jelly and as a 'crunchy' snack. Other uses include as an insect
repellant and to treat knee joints, sores, heart complaints, stomach
and intestinal disorders. It is reported to have anti-bacterial and
Chek Jawa, Feb 12
Chek Jawa, Feb 12
Tuas, Jul 06
Pulau Semakau, Aug 11
Tanah Merah, Dec 09
Labrador, Jun 05
species are difficult to positively identify without microscopic examination.
On this website, they are grouped by external features for convenience
agar-agar seaweeds on Singapore shores
Pulau Pawai, Dec 09
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N., H. T. W. Tan, S. Mitrovic & H. H. T. Yeo, 2011. A
Checklist of the Algae of Singapore, 2nd Edition. Lee Kong Chian Natural History Museum, National University of Singapore,
Singapore. 99 pp. Uploaded 1 October 2011. [PDF, 1.58 MB].
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and Times of Labrador Beach. Division of Biology, School of
Science, Nanyang Technological University & Department of Zoology,
the National University of Singapore. 160 pp.
John M. 2000. Marine
Plants of Australia University of Western Australia Press. 300pp.
H. P. & Menez, E. G., 1997.Field
Guide to the Common Mangroves, Seagrasses and Algae of the Philippines.
Bookmark, Inc., the Philippines. 197 pp.
- Trono, Gavino.
C. Jr., 1997. Field
Guide and Atlas of the Seaweed Resources of the Philippines..
Bookmark, Inc., the Philippines. 306 pp.
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.