Heterosiphonia crispella var. laxa [Status Unaccepted]   (Borgesen) W. J. Wynne,  1985 (Algae)
Organism information awaits expert curation
Class: Florideophyceae

Image copyrights: Smithsonian Tropical Research Institute

Thallus: spongy, forming fluffy clumps, to 0.5-1.5(-6) cm high, pink; branching dichotomous to irregular. Branches 80-110(-170) µm diam., of four pericentral cells; cells in lower portions 35-140 µm diam., 70-300 µm long; not corticated. Branchlets 0.9-1.3 mm long, deciduous, slightly incurved, on every other segment, unbranched initially, then basal single cell initiates 2-4(-6) times forked branchlet, initial unbranched limb often fades away; basal segment multiseriate, uniseriate above; apices tapered, to 12.5 µm diam. Rhizoids basal or forming where branches meet substrate. Tetrasporangial stichidia terminal on branchlets, oval with tapering apex, 110-120 µm diam., 170-250(-400) µm long; tetrasporangia spherical, 25-40 µm diam. Spermatangial stichidia to 60 µm diam., to 200 µm long.

Synonym (s)
Heterosiphonia wurdemannii var. laxa Borgesen, 1919

Common Name (s)
Economic Importance and Threats




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
  • Littler, DS and Littler, MM Marine plants of Pacific Panama Smithsonian Tropical Research Institute Available at - http://biogeodb.stri.si.edu/pacificalgae/search

Page last updated on:2011-04-08

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