Coeloseira compressa   Hollenberg,  1941 (Algae)
Organism information awaits expert curation
Class: Rhodophyta incertae sedis

Plant is saxicolous, tubular, septate, irregularly branched. Branches are stoloniferous with a peg-like holdfast. Thallus is caespitose, irregularly branched, mostly 2-3 cm long and light red in color. Branches 1-2 mm wide prominently constricted at the septa and mostly compressed thallus which becomes oval during reproduction. Apical cells with dense cytoplasm are present at the apex of tubular branches. Tubular branch is hollow 1 cell thick and continuous while it is solid and pseudoparenchymatous in the rhizoidal and nodal region.

The peripheral layer of the hollow internodal portion consists of thick (50 - 60µ) primary cells with dense chromatophores medullary filaments are developed from the primary cells by periclinal division. Primary cells undergo periclinal division resulting into the outer cell which form the peripheral cells and the inner cells which gives rise to either medullary filaments or gland cells. Polysporangia are scattered mostly in subterminal segments of branches and are 100 to 160µ diameter with 8-12 spores in each polysporangia. Polysporangia are developed from the peipheral primary cells by an oblique division when mature the sporangia bulge into the central cavity. Peripheral cells do no completely cover mature sporangia.

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Economic Importance and Threats




Literature Source(s)
  • (2003) Seaweeds of the Central West Coast of India Bioinformatics Centre, National Institute of Oceanography Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • (2006) Algaebase Available at -

Page last updated on:2011-04-18

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