Grateloupia indica   Boergesen,  1932 (Algae)
Organism information awaits expert curation
Class: Florideophyceae

Color: Dark purple red with a violet tinge in older parts; paler above and at free ends.

Plant attached to substratum by a very small basal disc. Stipe short, compressed, cuneate, expanding in broad thallus. Thallus flat, oblong to linear, extensively divided, tough, slippery, large, raching considerable dimension to more than one meter, 7-30 cm or more broad at broadest part, 300-350 µ thick; lobes of thallus many, margin irregularly sinuate, wavy; tips gradually tapering, perforations 1-2 mm across. Proliferations from margins of older thalli. Section, peripheral layer of densely packed short cells; medullary innermost cells, large, loose in texture, giving irregularly divided filament, lying in mucilaginous matrix in the interior. Medullary filaments 5-8 µ in diameter, interspersed with stellate cells and slender rhizoids. Stellate cells 15-20 µ in diameter; arms of stellate cells, 75 µ long. Stellate cells either connected by rhizoids or by themselves. Rhizoids 3-4 µ thick; outer medulla more compact than inner.

Cortex many layered, divided into outer and inner cortex. Inner cortex cells more loosely arranged than outer cortex cells; cells of inner layer 10-15 µ long, 10-12 µ broad, outside cells small, rounded. Outer cortex of densely packed, dichotomous cortical filaments, cells rounded, 5-8 µ X 3-5 µ. Terminal cells of cortical filaments cylindrical 6-9 µ X 3-4 µ with rounded tips, densely pigmented.

Tetraspores cruciately divided, scattered in the thallus in the cortical layer, 35-40 µ X 15-20 µ. Carpogonial branch in special ampullae. Cystocarps dispersed throughout the thallus, subspherical to spherical, occasionally flattened, 250 µ in diameter, 150-225 µ high. Carpospores polyhedral, with rounded corners, 18-20 µ X 10-15 µ, uni-nucleate, with ribbon shaped chromatophores.

Synonym (s)
Grateloupia indica Borgesen, 1932

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated, Coastal


• Gujarat, Okha Port (Lat: 22.45) (Long: 69.07) INDIA
• Gujarat, Okha (Lat: 22.47) (Long: 69.08) INDIA
• Gujarat, Veraval INDIA
• Gujarat, Okha INDIA
• Gujarat, Gulf of Kachchh (Lat: 22.6) (Long: 69.5) INDIA
• Gujarat INDIA
• Andaman and Nicobar Islands, Andaman Islands (Lat: 11.12) (Long: 92.82) INDIA
• Andaman and Nicobar Islands, Nicobar Island (Lat: 7.24) (Long: 93.74) INDIA
• Gujarat, Okha Port (Lat: 22.47) (Long: 69.08) INDIA
• Gujarat, Gulf of Kachchh INDIA
• Gujarat, Dwarka Reef INDIA
• Gujarat, Okha Reef INDIA
• Gujarat, Hanumandandi Reef INDIA
• Gujarat, Okha Port INDIA (Record: 02/2005-04/2005)
• Gujarat, Sutrapada INDIA
• Gujarat, Shivrajpur INDIA
• Gujarat, Porbandar INDIA
• Gujarat, Dwarka INDIA

Literature Source(s)
  • Srinivasan, KS (1969) Phycologia Indica: Icones of Indian marine algae Botanical Survey of India, Calcutta 1 52 pp Available at - NIO, Goa
  • Murthy, MS; Bhattacharya, M and Radia, P (1978) Ecological studies on the intertidal algae at Okha (India) Botanica marina Cram,De Gruyter and Co., Hamburg, Germany 21 381-386 Available at - NIO, Goa
  • Dave, MJ; Parekh, RG; Ramavat, BK; Doshi, YA and Chauhan, VD (1987) Protein contents of red seaweeds from Gujarat coast Seaweed Research and Utilization Seaweed Research and Utilization Association, Marine Fisheries-623 520, Tamil Nadu, India 10(1) 17-20 Available at - NIO, Goa
  • 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 -
  • (2003) Seaweeds of the Central West Coast of India Bioinformatics Centre, National Institute of Oceanography Available at -
  • (2006) Algaebase Available at -
  • (1997) Coastal marine environment of Gujarat 178pp Available at - NIO, Goa
  • Gopalakrishnan, P (1970) Some observations on the shore ecology of the Okha Coast Journal of the Marine Biological Association of India Cochin, India 120(1&2) 15-34 Available at - NIO, Goa
  • Thakur, MC; Reddy, CRK and Jha, B (2008) Seasonal variation in biomass and species composition of seaweeds stranded along Port Okha, northwest coast of India Journal of Earth System Science Springer 117(3) 211–218 Available at -
  • Jha B, Reddy C.R.K, Thakur M C and Rao M (2009) Seaweeds of India The Diversity and Distribution of seaweeds of Gujarat Coast Springer 211pp Available at - NIO

Page last updated on:2012-12-11

Back to Search