Crouania elisiae C.W.Schneider 2004
Publication Details
Crouania elisiae C.W.Schneider 2004: 566, figs 10-30
Published in: Schneider, C.W. (2004). Notes on the marine algae of the Bermudas. 6. Some rare or newly reported Ceramiales (Rhodophyta), including Crouania elisiae sp. nov. Phycologia 43: 563-578.
Request PDFPublication date: 30 Sept 2004
Type Species
The type species (holotype) of the genus Crouania is Crouania attenuata (C.Agardh) J.Agardh.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type Information
Type locality: Canton Point, John Smith's Bay, Bermuda Islands, western Atlantic, 32º19.0'N, 64º42.8'W; (Schneider 2004: 566) Holotype: C.W. Schneider No. 99-25-14, female; 26 July 1999; 8-10 m on Wrangelia bicuspidata; MICH; (no acc. number) (Schneider 2004: 566) Notes: Isotypes: CWS 005349, NY, US.
General Environment
This is a marine species.
Description
Algae epiphytic
or saxicolous, brownish-red, erect to 3 cm tall; main axes slender,
enveloped by mucus, lightly calcified, and much branched, with
tapering rounded apices; branching irregularly ramisympodial; axes
terete, 215-475 µm in diameter, ecorticate throughout, attached
basally by rhizoidal haptera (modified whorl-branches, and secondarily
by multicellular, uniseriate to branched rhizoids issued from the
basal cells of whorl-branches, 10-33 µm in diameter, with or without
multicellular tips; axial cells bearing three determinate
whorl-branches and containing distinct fibrillar plastids, the whorls
not contiguous over the axial cells in lower portions; whorl-branches
widely di- and trichotomously branched from basal cells, 10-30 µm in
diameter, 23-45 µm long [length:diameter ratio (L/D) 1.2-2.7],
tapering gradually to the penultimate cells that bear two subspherical
to spherical outer cortical cells, 5.0-12.5 µm in diameter; hairs
occasional to common on outer cortical cells; indeterminate axes
produced directly on axial cells above the whorl of determinate
branches in unbroken chains of 8-13 cells before whorl-branch
initiation; axial cells of major axes 70-180 µm in diameter
and 130-275 µm long below (L/D 0.9-2.5), attenuating to 23-33 µm in
diameter and 55-110 µm long (L/D 2.3-3.8) in median portions of upper
branches; 1-3 tetrasporangia sequentially produced from the basal
cells of whorl-branches, at maturity globose and cruciately to irregularly tetrahedrally divided, 35-67 µm in diameter; gametophytes presumably dioecious; 1-2 procarps forming directly on axial cells near the apices of branches, cystocarp development suppressing axial growth and axes being overtopped by new indeterminate axes; one or two cystocarps forming on branch apices, 120-200 µm in diameter and surrounded by attenuated whorl-branches forming a loose involucre at maturity; carposporangia irregularly ovoid, 25-55 µm in greatest dimension; spermatangia unknown.
Created: 23 October 2004 by M.D. Guiry.
Last updated: 27 September 2018
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=65878
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 27 September 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 April 2024
