Centroceras arcii C.W.Schneider, Cianciola & Popolizio 2015
Publication Details
Centroceras arcii C.W.Schneider, Cianciola & Popolizio 2015: 22, figs 3, 4A
Published in: Schneider, C.W., Ciancola, E.N., Popolizio, T.R., Spagnuolo, D.S. & Lane, C .E. (2015). A molecular-assisted alpha taxonomic study of the genus Centroceras (Ceramiaceae, Rhodophyte) in Bermuda reveals two novel species. Algae 30(1): 15-33.
Request PDFPublication date: 2015
Type Species
The type species (lectotype) of the genus Centroceras is Centroceras clavulatum (C.Agardh) Montagne.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type Information
Holotype locality: Horseshoe Bay grotto, south shore Bermuda Is., (32°15'01.1" N, 64°49'23.9"W), Bermuda, western Atlantic Ocean; (Schneider & al. 2015: 23) Holotype: Schneider/ Lane 09-13-6; March 16, 2009; MICH ; (Schneider & al. 2015: 23, fig. 3A) Notes: Isotypes: KIRI, NY, UNB, US, Herb CWS. GenBank No. KP222800.
Eponomy
"Named for A. Ralph Cavaliere (ARC), Professor Emeritus at Gettysburg College, who introduced the first author to the beauty of the algae, to commemorate his retirement as the beloved Charles H. Graff Professor of Biology."
General Environment
This is a marine species.
Description
Plants brownish- to rosy-red, with prostrate and erect axes 160-260 (-300) µm in diam. and to 5 cm tall (Schneider et al., 2015: fig. 3A & B); overall branching pattern pseudodichotomous with a branch or pair of branches usually occurring in the notches of main branches at apices (Schneider et al., 2015: fig. 3C); branches forming at intervals of 7-14 axial cells on the main axes, the branches divaricate and arched reflexively with straight or forcipate apices; adventitious branches developing from periaxial cells in lower portions (Schneider et al., 2015: fig. 3C); uniseriate, multicellular rhizoids issued from prostrate axes and lower portions of erect axes; 5-12 straight, 2-celled spines whorled at axial cell nodes, one always found in notches of dichotomous branches, 24-40 µm diam. and 80-130 µm long (Schneider et al., 2015: fig. 3D); distal ends of axial cells cutting off 14-16 periaxial cells, these remaining at the nodes during axial cell elongation (Schneider et al., 2015: fig. 3E); periaxial cells cutting off two cortical initials acropetally and one basipetally (Schneider et al., 2015: fig. 8A); the first cortical initial cutting off one spine and one elongate cortical cell, one gland cell and one elongate cortical cell, or two elongate cortical cells, the second cortical initial cutting off one elongate acropetal cortical cell and one basipetal cortical filament, the third cortical initial cutting off one basipetal filament; basipetal filaments made of mostly staggered cortical cell files of 8-27 cells, the cells rectangular in surface view, the smallest being 3-10 µm diam. and 9-43 µm long, the largest being 6-17 µm diam. and 8-54 µm long, these files completely corticating axial cells from node to node (Schneider et al., 2015: fig. 3F); tetrasporangia formed in whorls at the nodes (Schneider et al., 2015: fig. 3D), one produced from each periaxial cell, spherical to subspherical, 26-55 µm diam. and 38-75 µm long, subtended by 0-3 involucral filaments; gametangia not seen.
Created: 20 April 2015 by G.M. Guiry.
Last updated: 05 October 2015
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=154630
Citing AlgaeBase
Cite this record as:
Craig Schneider in Guiry, M.D. & Guiry, G.M. 05 October 2015. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 30 December 2024
