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| Seaweeds > Division Rhodophyta > Family Gracilariaceae > Genus Gracilaria |
| Knobbly
agar-agar seaweed Gracilaria salicornia Family Gracilariaceae updated Aug 10 Where seen? Small clumps of this distinctive knobbly seaweed is sometimes seen on many of our shores, on bare sand or attached to rocks and coral rubble. Features: 2-10cm long. Clusters of 'stems' made up of club-shaped structures (each about 1-3cm long) joined together. May form loose clusters of long 'stems'. Or dense clumps of short 'stems' growing low against rock or coral rubble. Black or brownish with only the slightest tinge of red, sometimes yellowish brown. 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 anti-tumor properties. |
 Chek Jawa, May 05  |
 Chek Jawa, Feb 12 |
 Chek Jawa, Feb 12 |
 Tuas, Jul 06 |
Knobbly agar-agar seaweeds on Singapore shores
 Pulau Hantu, Mar 06  |
 Tanah Merah, Dec 09  |
 Labrador, Jun 05  |
more photos of knobbly agar-agar seaweeds on Singapore shores
northern shores
southern shores part 1 | part 2 | part 3 | part 4 | part 5
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Bookmark, Inc., the Philippines. 197 pp.|
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