Crouania attenuata   (C. Agardh) J. Agardh,  1842 (Algae)
Organism information awaits expert curation
Class: Florideophyceae

Image copyrights: Kobe University Library Digital Archive

Color: Rosy or whitened by a light deposit of lime.

Plants at first tufted, 1-3 cm tall, becoming free and entangled, the length may reach 5 cm. Branching irregularly alternate, the diameter of the branches usually about 0.2-0.5 mm. Axial cells to 170 µ diameter, 300 µ long or somewhat more, ecorticate. Ramuli spreading the basal cell about 25-30 µ diameter, 30 µ long, the upper ramelli with cells 6-8 µ diameter and 2-4 diameter long, sometimes blunt, sometimes continued into hair tips.

Tetrasporangia solitary on the distal ends of the basal cells of the ramuli, 40-50 µ diameter, 60-65 µ long. Spermatangia in groups of 2-3, terminating the divisions of the ramelli. Cystocarps usually single, each in rather short branch.

Synonym (s)
Mesogloia attenuata C. Agardh 1824
(Homotypic synonym)
Crouania bispora P. L. Crouan & H. M. Crouan, 1848
(Heterotypic synonym)
Crouania attenuata f. bispora (P. L. Crouan & H. M. Crouan) Hauck, 1882
(Heterotypic synonym)
Crouania minutissima Yamada, 1944
(Heterotypic synonym)

Common Name (s)
Economic Importance and Threats

Habitat:  Coastal


• Tamil Nadu, Mandapam (Lat: 9.28) (Long: 79.12) INDIA
• Tamil Nadu INDIA
• Andhra Pradesh, Vishakhapatnam (Lat: 17.7) (Long: 83.3) INDIA
• Tamil Nadu, Pamban INDIA
• Tamil Nadu, Mandapam INDIA

Literature Source(s)
  • Jassund, E (1977) Marine algae in Tanzania VI Botanica Marina Walter de Gruyter, Berlin 20 405-414 Available at - NIO, Goa
  • Nasr, AH (1940) The chorography of the marine algae inhabiting the northern part of the Red Sea coast 13-155 Available at - NIO, RC, Kochi
  • Stegenga, H and Bolton, JJ (1992) Ceramiaceae (Rhodophyta) of the Cape province, South Africa: Distribution in relation to concepts of marine provinces Botanica Marina 35 99-107 Available at - NCL, Pune
  • Schils, T; Coppejans, E; Verbruggen, H; Clerck, OD and Leliaert, F (2004) The marine flora of Rodrigues (Republic of Mauritius, Indian Ocean): An island with low habitat diversity or one in the process of colonisation? Journal of Natural History Taylor and Francis 38 3059-3076
  • Anderson, RJ and Stegenga, H (1989) Subtidal algal communities at Bird Island, Eastern Cape, South Africa Botanica Marina Walter de Gruyter, Berlin 32 299-311 Available at - NIO, Goa
  • Basson, PW; Mohamed, SA and Arora, DK (1989) A survey of the benthic marine algae of Bahrain Botanica Marina 32 27-40 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
  • Bolton, JJ; Oyieke, HA and Gwada, P (2007) The seaweeds of Kenya: Checklist, history of seaweed study, coastal environment, and analysis of seaweed diversity and biogeography South African Journal of Botany 73 76-88 Available at - NCL, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • 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
  • Kobe University library Available at -
  • Sundaram, KS; Sarvesan, R; Mohamed, KH and Shanbhogue, SL (1969) Catalogue of molluscs, prawns, stomatopods and marine algae in the reference collections of the central marine fisheries research institute Bulletin Of Central Marine Fisheries Research Institute CMFRI, Cochin 9 1-52 Available at -
  • Taylor, WR (1972) Marine algae of the eastern tropical and subtropical coasts of the Americas University of Michigan Press 870 pp Available at - NIO, Goa

Page last updated on:2011-05-03

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