Anabaena sphaerica   Bornet & Flahault  (Cyanobacteria formerly Blue Green Algae)
Organism information awaits expert curation
Class: Cyanophyceae

Image copyrights: Science Daily

Size: Trichomes 3-6 μm broad; cells 5-9 μm broad; heterocyst 3-7 μm long.

Color: Thallus blue green

Plant mass floating. Sheaths not distinct around the trichomes, hyaline, soon dissolving in water. Trichomes moniliform, straight, generally agglutinated together in more or less parallel bundles, or somewhat flexuous. Cells depressed spherical, or spherical truncate or barrel shaped, apical cells more or less conical. Cell contents granular, blue-green. Heterocysts nearly spherical. Resting spores 9-14 μm long and 6-10 μm broad, nearly spherical or elliptic, either solitary or contiguous to heterocysts, often in short chain like series with thicker membrane, outer wall smooth when old, slightly brownish yellow.

Synonym (s)

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Pudukottai, Kattumavadi INDIA
• Maharashtra, Nalasopara Saltpans INDIA (Record: 10/2002-12/2002)
• Tamil Nadu, Pudukottai, Manamelkudi INDIA
• Tamil Nadu, Pudukottai, Prathaparamanpattinam INDIA

Literature Source(s)
  • Velankar, DA and Chaugule, BB (2007) Algae of the saltpans of Nalasopara, Mumbai Seaweed Research and Utilisation Seaweed Research and Utilisation Association, Tamil Nadu, India 29(1 & 2) 273-278 Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Science Daily Available at -
  • Biswas, K (1948) Common fresh & brackish water algal flora of India & Burma Records of the Botanical Survey of India Periodical Expert Book Agency, Delhi, India 15(1) 125 pp Available at - NIO, Goa
  • Nedumaran, T and Manokaran, S (2009) Cyanobacterial flora in some salt pans of Pudukkottai district, Tamil Nadu, India Journal of Phytology 1(3) 169–171 Available at -
  • (2006) Algaebase Available at -

Page last updated on:2010-09-24

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