Ascocyclus orbicularis   (J. Agardh) Kjellman,  1890 (Algae)
Organism information awaits expert curation
Class: Phaeophyceae

Color: Brown

Plants in the form of small patches. Younger stages representing small circular discs made up of short cells grouped together. Cell of the disc 8-20 µ long and 6-15 µ broad, possessing a parietal chromatophore. Erect system consisting of long hairs, ‘ascocytes’ and plurilocular sporangia. Hairs composed of colorless cells, 15-90 µ long and 10-16 µ broad, possessing basal meristem. Colorless clavate ‘ascocytes’ 50-66 µ long and 9-15 µ broad. Brown color results from the dominance of the xanthophyll fucoxanthin; this masks the other pigments, Chlorophyll a and c (no chlorophyll b), beta-carotene and other xanthophylls.

Plants bearing only plurilocular sporangia, the latter uniseriate, cylindrical, 40-100 µ long and 9-15 µ broad.

Plants epiphytic on the thalli of Padina commersonii.

Synonym (s)
Myrionema orbiculare J. Agardh, 1848
(Homotypic synonym)
Ascocyclus orbicularis (J. Agardh) Kjellman, 1890

Common Name (s)
Economic Importance and Threats

Habitat:  Rocky, Coastal


• Gujarat, Dwarka Coast (Lat: 18.17) (Long: 66.17) INDIA
• Gujarat, Porbandar (Lat: 21.63) (Long: 69.6) INDIA
• Gujarat, Veraval (Lat: 20.9) (Long: 70.37) INDIA
• Gujarat INDIA
• Gujarat, Dwarka INDIA
• Gujarat, Porbandar INDIA
• Gujarat, Veraval INDIA

Literature Source(s)
  • Sahoo, D; Nivedita and Debasish (2001) Seaweeds of Indian coast S. B. Nangia, A. P. H. Publishing Corporation, New Delhi 283 pp Available at - NIO, Goa
  • Silva, PC; Basson, PW and Moe, RL (1996) Catalogue of the benthic marine algae of the Indian Ocean University of California Press 79 1259 pp Available at - NIO, Goa
  • Oza, RM and Zaidi, SH (2001) A revised checklist of Indian marine algae Available at - NIO, Goa
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Mishra, JN (1966) Phaeophyceae in India ICAR 203 pp Available at - NIO, Goa
  • (2006) Algaebase Available at -
  • Krishnamurthy, V (2006) Key to the taxonomic identification of green and brown marine algae of India Recent advances on applied aspects of Indian marine algae with reference to global scenario. Seaweed taxonomic identification, aquaculture, resource, environment, fouling and disease Central Salt and Marine Chemicals Research Institute, Bhavnagar 1 1-146 Available at - NIO, Goa

Page last updated on:2010-09-14

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