Chondracanthus canaliculatus ( )
Chondracanthus canaliculatus (Harvey) Guiry Cape Arago, in Coos Co. Oregon
© Wendell Wood (firstname.lastname@example.org)
Chondracanthus canaliculatus (Harvey) Guiry in Hommersand, Guiry, Fredericq & Leister 1993: 115
Published in: Hommersand, M.H., Guiry, M.D., Fredericq, S. & Leister, G.L. (1993). New perspectives in the taxonomy of the Gigartinaceae (Gigartinales, Rhodophyta). Proceedings of the International Seaweed Symposium 14: 105-120, 41 figs.
Status of name
This name is of an entity that is currently accepted taxonomically.
Gigartina canaliculata Harvey
Type locality: San Francisco, California (Harvey 1840: 409). Type: David Douglas; 1831; TCD sine numero (Dawson 1961: 267). Notes: The type consists of two clumps and a fragment of a cystocarpic specimen (Hughey & Hommersand 2008: fig. 63). Isotype: L (Hommersand et al. (1993: 115).
Origin of species name
Adjective (Latin), canaliculate, with a longitudinal channel or groove (Stearn 1973).
Gigartina canaliculata Harvey 1840
mid and high intertidal; tide pool; epilithic (Augyte & Shaughnessy, 2014). - (5 Dec 2014) - Wendy Guiry
This is a marine species.
Thalli up to 25 cm tall, cartilaginous, yellow-green to purple-black, densely clumping, consisting of several to many erect shoots from a primary disc-shaped holdfast; later abundantly stoloniferous; erect shoots subcylindrical, 0.5-2 mm wide, pinnate to irregularly dichotomously branched, the upper third abundantly provided with short, distichous, determinate, simple or mostly compound spinulose branchlets 1-3 mm long and variable in thickness; cortex 7-8 cell layers thick; medullary cells variable in size and shape, 2-20 µm wide. Cystocarps 700-950 µm in diameter, globose, solitary on simple spinose pinnules, or compound in groups on large, protruding, echinate ramuli; carpospores subspherical, 12- 20 µm in diameter. Spermatangia slightly nemathecial in surface cortical layers on thin, crisped, feathery, triangular terminal pinnules with attenuated tips. Tetrasporangial sori 100-300 mm in diameter, borne on all sides in upwardly pointing determinate ramuli or pinnules that vary from short (3-5 mm) densely crowded and abruptly acute to long (2-3 cm) widely scattered forms with 2-3 sharp teeth, or unbranched and subulate; tetrasporangia 34-45 µm diameter, formed in chains 4-6 cells long.
Saxicolous in the mid- to high intertidal on exposed coasts
Braune, W. (2008). Meeresalgen. Ein Farbbildführer zu den verbreiteten benthischen Grün- Braun- und Rotalgen der Weltmeere. pp. -596, pls 1-266 (colour photographs). Ruggell: A.R.G. Gantner Verlag.
Hughey, J.R. & Hommersand, M.H. (2008). Morphological and molecular systematic study of Chondracanthus (Gigartinaceae, Rhodophyta) from Pacific North America. Phycologia 47: 124-155.
Schubert, N., Garcia-Mendoza, E. & Pacheco-Ruiz, I. (2006). Carotenoid composition of marine red algae. Journal of Phycology 42: 1208-1216.
Created: 10 February 1998 by M.D. Guiry
Verified by: 07 November 2008 by Wendy Guiry
Accesses: This record has been accessed by users 3868 times since it was created.
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Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=3522
Cite this record as:
Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 17 August 2019.