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Seaweeds > Division Chlorophyta
Frilly fan green seaweed
Udotea sp.*
Family Udoteaceae
updated Aug 10

Where seen? This frilly seaweed is sometimes seen on some of our Northern shores, growing on coral rubble.

Features: A long fan- or spatula-shaped blade (2-4cm long) with frilled edges, in clusters of several blades. Sometimes really long ones (about 10cm) are seen growing in clumps of a few large blades. The blade is made up of a tangle of tiny filaments that give it a velvety texture. It is slightly to moderately calcified.
Usually olive green, but may be bright to dark green.

According to AlgaeBase, there are 40 current Udotea species.


Beting Bronok, Jul 08
Sometimes confused with Solitary stiff fan green seaweed (Avrainvillea erecta) and the Clustered stiff fan green seaweed (Avrainvillea sp.) both of which have flat blades that are not frilly.

Human uses: Some species have anti-bacterial and anti-tumor properties.
 

Frilly fan green seaweeds on Singapore shores


Tuas, Sep 08

About 10cm long.


Tuas, Apr 05

Labrador, Jul 05

Chek Jawa, May 05

more photos of frilly fan green seaweeds on Singapore shores
northern shores | southern shores

*Species are difficult to positively identify without close examination of internal parts.
On this website, they are grouped by external features for convenience of display.

Udotea species recorded for Singapore
Pham, M. N., H. T. W. Tan, S. Mitrovic & H. H. T. Yeo, 2011. A Checklist of the Algae of Singapore.

  Udotea argentea
Udotea flabellum
Udotea glaucescens

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References

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