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Chondracanthus serratus (N.L.Gardner) Hughey & Hommersand

Publication details
Chondracanthus serratus (N.L.Gardner) Hughey & Hommersand 2008: 148, figs 56-62

Published in: Hughey, J.R. & Hommersand, M.H. (2008). Morphological and molecular systematic study of Chondracanthus (Gigartinaceae, Rhodophyta) from Pacific North America. Phycologia 47: 124-155.
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Type 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 serrata N.L.Gardner

Type information
Type locality: Ensenada, Baja California, Mexico (Dawson 1961: 274). Type: N.L. Gardner 4938; July 1924 (see Hughey & Hommersand 2008: 148); On the rocks at extreme low tide level. UC 296698, 296699 (Hughey & Hommersand 2008: 148). Notes: UC296698: tetrasporic. UC 296699: cystocarpic. Isotype: Gardner 4958 (cystocarpic).

Origin of species name
Adjective (Latin), serrated, saw-edged with teeth pointing forwards (Stearn 1973).

Homotypic Synonym(s)
Gigartina serrata N.L.Gardner 1927

Heterotypic Synonym(s)
Gigartina canaliculata f. laxa Collins 1906

General environment
No habitat entry has yet been made for this entity.

Description
Thalli 14-30 cm high, consisting of few to many coarse, cartilaginous, dark purplish red shoots from a crustose stoloniferous base; erect shoots usually greater than 2 mm in diameter, terete throughout, usually forked once or twice 4-9 cm above the base into several main branches that are irregularly dichotomously to oppositely branched 2-4 more times; lower axes naked; upper branches provided on all sides at more or less regular intervals with simple or branched fructiferous ramuli of variable thickness; cortex 7-8 cell layers thick; medullary cells variable in size and shape, 1.5- 17 µm in width. Cystocarps 400-700 µm in diameter, mostly forming dense pedicellate clusters at intervals on lateral branches; carpospores 12-18 µm in diameter. Spermatangial plants sparsely branched, lacking papillae, gracilariod in appearance. Tetrasporangial sori 150-300 µm in diameter, widely scattered in ramuli that point upward; tetrasporangia 32-41 µm diameter, formed in chains 5-7cells long.

Habitat
Saxicolous in low intertidal in swift flowing currents near the entrance of bays.

Detailed distribution with sources
(as Gigartina serrata N.L.Gardner)
North America: Baja California (Taylor 1945), Mexico (Dawson 1961).

(as Chondracanthus serratus (N.L.Gardner) Hughey & Hommersand)
North America: California (CA) (Hughey & Hommersand 2008, Miller 2012), Mexico (Hughey & Hommersand 2008).

Created: 25 April 2008 by M.D. Guiry

Verified by: 02 March 2015 by Paul Gabrielson

Accesses: This record has been accessed by users 484 times since it was created.

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Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=133366

Citing AlgaeBase
Cite this record as:
Paul Gabrielson in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 May 2019.

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