Hecatonema terminale   (Kutzing) Kylin,  1937 (Algae)
Organism information awaits expert curation
Class: Phaeophyceae

Plants forming minute dense felt-like growth of about 2 mm in height. Basal system filamentous, prostrate, irregularly branched, monostromatic, spreading over the surface of the host, sometimes penetrating inside and becoming endophytic. Cells of the prostrate system irregular in shape, 15-25 µ and 8-10 µ broad, having numerous chromatophores. Erect system arising from the cells of the prostrate system, the former composed of erect filaments and plurilocular sporangia. Erect filaments long, unequal, mostly unbranched, somewhat narrow at the bases, prolonged into hair-like form at the apices, with a basal meristem. Branches confined only to the lower region of the main filament, originating monopodially, and ending into likewise hair-like form. Cells of the filaments cylindrical, slightly constricted at cross-walls, 20-60 µ long and 9-15 µ broad, possessing 2-4 plate-like chromatophores.

Plurilocular sporangia terminal on short filaments rarely lateral on longer ones, 50-130 µ long and 14-21 µ broad. Sporangia elongated fusiform or linear lanceolate.

Epiphytic on the thallus of Dictyota atomaria.

Synonym (s)
Hecatonema maculans (F. S. Collins) Sauvageau, 1897
(Heterotypic synonym)
Ectocarpus terminalis Kutzing, 1845
(Homotypic synonym)
Ascocyclus major Foslie, 1891
(Heterotypic synonym)
Myrionema majus Foslie, 1894
(Heterotypic synonym)
Phycocelis maculans F. S. Collins, 1896
(Heterotypic synonym)

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• Tamil Nadu, Pamban (Lat: 9.29) (Long: 79.21) INDIA
• Gujarat, Dwarka Coast (Lat: 18.17) (Long: 66.17) INDIA
• Maharashtra, Mumbai (Lat: 18.98) (Long: 72.83) INDIA
• Gujarat INDIA
• Maharashtra INDIA
• Tamil Nadu INDIA
• Gujarat, Dwarka INDIA
• Maharashtra, Mumbai 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 - 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/

Page last updated on:2010-09-17

Back to Search