Licmophora flabellata   C. Agardh,  1830 (Diatom)
Organism information awaits expert curation
Class: Bacillariophyceae

Image copyrights: Chris Lobban

Cells about 100 μm long in girdle and valve view

Size: 60-300 μm long

Licmophora flabellata usually has very distinctive fan-shaped clusters of cells at the tip of thick multistranded mucilage stalks. Single cells are attached to very short branches along the main axis. Very large bushy colonies may have most cells on short branches. The plastids are distinctively 4 large flat plates with pyrenoids (most Licmophoras have many small plastids). SEM views of the cells show two distinctive characters: twin spines on the head pole and rimoportulae all along the sternum. These rimoportulae can be seen in the light microscope but are easily obscured. The foot pole is capitate and has 30 slits in the multiscissura around the base. Shorter cells appear more wedge-shaped in girdle view because the depth of the frustule at the apical pole stays the same as cells shorten; short cells resemble several other species in girdle view but can be distinguished by the plastids.

Reproduction is general for group: both sexual and asexual.

Synonym (s)
Exilaria flabellata Greville, 1827
(Homotypic synonym)

Common Name (s)
Economic Importance and Threats

Habitat:  Pelagic, Estuarine, Coastal
Trophic Level:  Producer
Predator:  Marine microorganisms and animal larvae


• Karnataka, Netravati Estuary INDIA (Record: 02/1998-01/1999)
• Tamil Nadu, Arockiapuram Coast INDIA
• Kerala, Balathuruthu INDIA
• Goa, Dona Paula Bay (Lat: 15.45) (Long: 73.8) INDIA
• Kerala, Kochi INDIA (Record: 02/2005-02/2006)
• South West Coast INDIA

Literature Source(s)
  • Rajesh, KM; Gowda, G; Mendon, MR and Nazareth, AP (2000) Distribution of benthic diatoms in brackish water ponds along the Nethravathi estuary, south west coast of India Journal of the Marine Biological Association of India The Marine Biological Association of India, Cochin 42(1&2) 32-38 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Jordan, RW; Lobban, CS and Theriot, EC (2009) Western Pacific diatoms project ProtistCentral Available at -
  • (2006) Algaebase Available at -
  • Roslin, AS and Lazarus, S (1998) A preliminary study on the plankton of Arokiapuram coast Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu, India 20(1&2) 9-12 Available at - NIO, Goa
  • Sanilkumar, M G; Dr.Joseph, K J; Dr. Saramma, A V (2009) Planktonic Microalgae Microalgae in the Southwest Coast of India 34-114 Available at -
  • Patil, JS and Anil, AC (2005) Biofilm diatom community structure: Influence of temporal and substratum variability Biofouling Taylor & Francis 21(3/4) 189 – 206 Available at -
  • Sanilkumar, MG; Saramma, AV and Joseph, KJ (2009) Vertical distribution of microphytobenthos in Cochin estuary Journal of marine biological association of India The marine biological association of India 51(1) 61-68 Available at - NIO, Goa
  • Gopinathan, CP (1984) A systematic account of the littoral diatoms of the southwest coast of India Journal of the marine biological association of India The marine biological association of India 26(1&2) 2-31 Available at - NIO, Goa

Page last updated on:2011-04-04

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