Halimeda simulans   M.A.Howe,  1907 (Algae)
Organism information awaits expert curation
Class: Bryopsidophyceae

Image copyrights: IPTEKnet

Size: The plant grows to about 10 cm in height.

The plant is attached to substrarum by means of a holdfast which is slightly flattened. The thallus erect, light green, moderately calcified but the density of calcification is comparatively higher in the lower segments. The predominant mode of branching is trichotomous. Though the plant exhibits fairly dense branching, the branches are complanate in a single plane. Segments predominantly subcuneate to reniform with outer margins entire to shallowly lobed. The segments, small or big, do not show much variability in shape. The lowermost few segments are narrowly cylindrical and about 2 mm long. Other segments are reniform or subcuneate. The margin is entire or trilobed, some segments are ribbed.

The thallus has a central medulla surrounded by a cortex. The medulla is composed of vertically running medullary filaments . The medullary filaments are largely trichotomously branched. From these medullary filaments arise lateral cortical filaments. The innermost urticle is elongated and does not show any structural variation. The innennost utricle bears about 3 secondary utricles bearing two peripheral utricles. The peripheral utricles present an angular appearance in surface view. At the nodal region all the medullary filaments remain united communicating with each other through pores.

Synonym (s)
Halimeda incrassata var. simulans (Howe) Borgesen, 1911
Halimeda simulans Howe, 1907

Common Name (s)
Economic Importance and Threats



• Lakshadweep INDIA
• Lakshadweep, Andrott Island INDIA (Record: 01/1987-03/1987)

Literature Source(s)
  • 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
  • Phang, SM (2006) Seaweed resources in Malaysia: Current status and future prospects 9(2) 185-202 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • iptek.net Available at - http://www.iptek.net.id/ind/?mnu=
  • 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
  • Sundararajan, M; Rajendran, M; Kaliaperumal, N and Kalimuthu, S (1999) Studies on species of Halimeda from Lakshadweep Seaweed Research and Utilisation CMFRI 21 (1-2) 161-169 Available at - http://eprints.cmfri.org.in/7072/1/Pages_from_Seaweed_Research_And_Utilisation_Vol_21_161-169.pdf
  • Sealifebase Available at - http://www.sealifebase.org/
  • iptek.net Available at - http://www.iptek.net.id/ind/?mnu=
  • 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
  • Littler, DS; Littler, MM and Brooks, BL (1995) Marine algae and seagrasses from the Tobacco Range Fracture Zone, Belize, C.A Atoll Research Bulletin Smithsonian Institution Press 429 1-43 Available at - http://si-pddr.si.edu/dspace/handle/10088/2580

Page last updated on:2011-10-03

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