Chondracanthus canaliculatus (Harvey) Guiry 1993
Current name:
Chondracanthus canaliculatus (Harvey) Guiry
Cape Arago, in Coos Co. Oregon - 05 February 2011. Wendell Wood (ww@oregonwild.org)
Publication Details
Chondracanthus canaliculatus (Harvey) Guiry 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.
Request PDFType Species
The type species (lectotype) of the genus Chondracanthus is Chondracanthus chauvinii (Bory) Kützing.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Basionym
Gigartina canaliculata Harvey
Type Information
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 1983).
General Environment
This is a marine species.
Description
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.
Habitat
Saxicolous in the mid- to high intertidal on exposed coasts
Created: 10 February 1998 by M.D. Guiry.
Last updated: 07 November 2008
Verification of Data
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=3522
Citing AlgaeBase
Cite this record as:
G.M. Guiry in Guiry, M.D. & Guiry, G.M. 07 November 2008. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 08 January 2025
