Halopeltis pellucida C.W.Schneider & G.W.Saunders 2012

Publication Details
Halopeltis pellucida C.W.Schneider & G.W.Saunders 2012: 104, fig. 5

Published in: Schneider, C.W., Freshwater, D.W. & Saunders, G.W. (2012). First report of Halopeltis (Rhodophyta, Rhodymeniaceae) from the non-tropical Northern Hemisphere: H. adnata (Okamura) comb. nov. from Korea, and H. pellucida sp. nov. and H. willisii sp. nov. from the North Atlantic. Algae 27: 95-108, 5 figs.

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Type Species
The type species (holotype) of the genus Halopeltis is Acropeltis australis J.Agardh.

Status of Name
This name is of an entity that is currently accepted taxonomically.

Type Information
Type locality: Cathedral Rock, off south shore of Bermuda Is., Bermuda; (Schneider, Freshwater & Saunders: 104) Holotype: C.W. Schneider CWS10-24-6; 23 August 2010; 17 m; UNB; (Schneider, Freshwater & Saunders: 104)

Origin of Species Name
Adjective (Latin), pellucid, translucent but not hyaline (Stearn 1973).

General Environment
This is a marine species.

Description
Plants procumbent and translucent, spreading to 2 cm across; blades ligulate, arising from short branched stipes, pseudodichotomously branched; blades 2.0-2.5 mm in diameter in ligulate portions and to 4.0 mm in diameter below branches, to 260 µm thick; attached initially to substratum by a small basal holdfast, and secondarily to the substratum and themselves by haptera issuing from blade margins, margins otherwise smooth; blade apices rounded to spatulate (Schneider et al. 2012: fig. 5A & B); cortex incompletely forming over the interstices of outer medullary cells in surface view in apical regions (Schneider et al. 2012: fig. 5E), composed of 1-2 layers of circular to ellipsoid pigmented cells from 5-12 µm in greatest dimension (Schneider et al. 2012: fig. 5F); cortex connecting to a lightly-pigmented pseudoparenchymatous medulla with 2-3 layers of larger globose to rounded polygonal cells (Schneider et al. 2012: fig. 5F & I) with strongly reticulated cytoplasts (Schneider et al.2012: fig. 5E & F), cells from 25-120 µm in greatest dimension.
Tetrasporangia cruciately divided, broadly ellipsoidal, 12-22 µm in diameter and 17-31 µm long (Schneider et al. 2012: fig. 5G & H), developmentally replacing outer cortical cells and pit-connected to inner cortical cells in oval to cordiform, raised nemathecial-like sori forming at the apices of blades or below branch forkings (Schneider et al. 2012: fig. 5B), surrounded by anticlinally elongated outer cortical cells (Schneider et al. 2012: fig. 5G & H); sori forming on the upper surface. Gametophytes monoecious; spermatangia and cystocarps developing on both blade surfaces; cystocarps hemispherical, somewhat constricted basally, ostiolate, sometimes grouped contiguously; pericarp 8-12 cells thick, ostiole wall lined with a network of densely pigmented, flattened cells; carposporophyte compressing medullary cells below the cystocarp, forming a network of darkly staining nutritive cells that develop in the chamber floor (Schneider et al. 2012: fig. 5M); gonimoblast cells small, darkly staining, giving rise to secondarily pit-connected gonimoblast cells that ramify and produce obovoid carposporangia to 12 µm in diameter; spermatangia in sori at times ringing the cystocarps (Schneider, Freshwater & Saunders 2012: fig. 5I), even slightly covering the basal portions of the pericarp (Schneider et al. 2012: fig. 5J); spermatangia ellipsoidal, 2-3 µm in diameter (Schneider et al. 2012: fig. 5K & L).
[Original description]

Created: 16 August 2012 by M.D. Guiry.

Last updated: 06 October 2015

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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=143375

Citing AlgaeBase
Cite this record as:
Craig Schneider in Guiry, M.D. & Guiry, G.M. 06 October 2015. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 28 March 2024

 
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