Dictyota atomaria [Status Unaccepted]   Hauck,  1884 (Algae)
Organism information awaits expert curation
Class: Phaeophyceae

Size: Height 15-45 cm.

Color: Yellowish brown

Plants large, membranaceous; basal portion cuneate, possessing bent, flat subterete branches giving rise to numerous rhizoids. Proliferating branches more or less richly arising from the margins of the thalli. Upper portion strap-shaped, broadening gradually above the base, repeatedly branched dichotomously. Branches 1-4 cm broad, apices rounded margins in younger thalli entire, but in adult giving rise to acute ciliate teeth of 2-3 mm in length, occurring at an interval of 0.5 cm. Thallus composed of superficial layers enveloping a middle layer in between; the former composed of small, thin-walled, rectangular cells, richly provided with chromatophores, the middle layer formed of large, thick-walled, more or less squarish cells, poor in contents.

Reproductive bodies scattered on both the surfaces of the thalli. Antheridia occurring in sori, club-shaped more or less cylindrical. Oogonia spherical, grouped in sori. Tetrasporangia globular, distributed all over the thallus surface, occurring singly or in groups of 2-3.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated, Rocky, Coastal


• Gujarat, Okha Port (Lat: 22.45) (Long: 69.07) INDIA
• Gujarat, Gulf of Kachchh (Lat: 22.6) (Long: 69.5) INDIA
• Tamil Nadu, Mandapam (Lat: 9.28) (Long: 79.12) INDIA
• Gujarat, Dwarka INDIA
• Maharashtra, Mumbai INDIA
• Tamil Nadu, Mahabalipuram INDIA
• Tamil Nadu, Tuticorin INDIA
• Lakshadweep, Bassas de Pedro (Lat: 13.5) (Long: 72.58) INDIA (Record: 12/1988) (Depth: 18-70 mts)
• Lakshadweep, Cora Divh (Lat: 13.75) (Long: 72.25) INDIA (Record: 12/1988) (Depth: 18-70 mts)
• Lakshadweep, Sesostris (Lat: 12.91) (Long: 72.08) INDIA (Record: 12/1988) (Depth: 18-70 mts)

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
  • Salim, KM (1964) The distribution of marine algae along Karachi coast Botanica Marina Cram, De Gruyter and Co. Hamburg, Germany 7 183-197 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
  • Untawale, AG and Jagtap, TG (1989) Observations on marine macrophytes of the Republic of Seychelles Botanica Marina Walter de Gruyter, Berlin 32 115-119 Available at - NIO, Goa
  • Subba Rao, NV and Sastry, DRK (2005) Fauna of Marine National Park, Gulf of Kuchchh (Gujarat) ZSI 79 pp Available at - NCL, Pune
  • Parekh, RG; Bhatt, SB; Chauhan, VD and Rao, PS (1984) Bromine Content of Some Indian Marine Algae Indian Journal of Marine Sciences 13 88-89 Available at - NIO, RC Kochi
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Mishra, JN (1966) Phaeophyceae in India ICAR 203 pp Available at - NIO, Goa
  • (2006) Algaebase Available at - http://www.algaebase.org/
  • Ambiye, V and Untawale, AG (1992) Deep water marine algal flora of the submerged banks off west coast of India Oceanography of the Indian Ocean Oxford and IBH, New Delhi 247-252 Available at - http://drs.nio.org/drs/handle/2264/2975

Page last updated on:2011-04-11

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