Polysiphonia denudata   (Dillwyn) Greville ex Harvey,  1833 (Algae)
Organism information awaits expert curation
Taxonomy
Kingdom:Plantae
Phylum:Rhodophyta
Class: Florideophyceae
Order:Ceramiales
Family:Rhodomelaceae

Description
Size: Plant reaching up to 10 or more inches.

Color: Varies from light pinkish red to purplish red in the uppermost branches on the thallus to a dark red, almost black color at the base.

The brush-like branch tips are soft and pliable and the basal segments tend to be stiff slender and sparsely branched. Six pericentral cells present. Plant widespreading from the point of attachment. Red color results from the dominance of the pigments phycoerythrin and phycocyanin; this masks the other pigments, chlorophyll a (no chlorophyll b), beta-caratene and a number of unique xanthophylls.

Vegetative reproduction is rare; asexual reproduction is effected by the formation of various kinds of spores. Sexual reproduction due to their passive, non flagellated sperm cells (spermatia).

Epiphytic on eelgrass.


Synonym (s)
Conferva denudata Dillwyn, 1809
(Homotypic synonym)
Polysiphonia denudata (Dillwyn) Greville in W. Hooker, 1833
Hutchinsia variegata C. Agardh, 1824
(Heterotypic synonym)
Polysiphonia variegata (C. Agardh) Zanardini, 1840
(Heterotypic synonym)
Polysiphonia corymbosa Dickie, 1874
Hutchinsia biasolettoana C. Agardh, 1827
(Heterotypic synonym)
Polysiphonia variegata (C. Agardh) J. Agardh, 1842
(Heterotypic synonym)

Common Name (s)
Economic Importance and Threats

Ecology
Habitat:  Rocky, Coastal

Biogeography


• BAHRAIN
• BANGLADESH
• INDIA
• KUWAIT
• MAURITIUS
• PAKISTAN
• SAUDI ARABIA
• TANZANIA
• YEMEN
• Maharashtra INDIA
• Gujarat, Okha INDIA
• Goa INDIA
• Gujarat INDIA
• Maharashtra, Mumbai INDIA
• Gujarat, Kathiawar INDIA
• Gujarat, Adri INDIA

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
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • (2006) Algaebase Available at - http://www.algaebase.org/
  • Hillson, CJ (1977) Seaweeds: A color-coded, illustrated guide to common marine plants of the east coast of the United States Keystone Books, USA 194 pp 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
  • 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:2012-12-13

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