Meristotheca peltata N'Yeurt & Payri 2009

Publication Details
Meristotheca peltata N'Yeurt & Payri 2009: 17, figs 16-24

Published in: N'Yeurt, A.D.R. & Payri, C.E. (2009). Four new species of Rhodophyceae from Fiji, Polynesia and Vanuatu, South Pacific. Phycological Research 57: 12-24.

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Type Species
The type species (lectotype) of the genus Meristotheca is Meristotheca papulosa (Montagne) J.Agardh.

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

Type Information
Type locality: Belcher Rocks, Suva Lagoon, Fiji (18°10'15''S, 178°31'10''E); (N'Yeurt & Payri 2009: 19)D.W. Keats, -20 m; 7 November 1994; -20 m; SUVA; A 5407La (cystocarpic) (N'Yeurt & Payri 2009: 19) Notes: Paratypes. Belcher Rocks, Suva Lagoon, Fiji, 7 November 1994, leg. D. W. Keats, -20 m, SUVA-A 5407Lb (cystocarpic); 5407Lc.; Belcher Rocks, Suva Lagoon, Fiji, 13 November 1999, leg. D. W. Keats & A. D. R. N’Yeurt, -25 m, SUVA-A 5482L (spermatangial).

Origin of Species Name
Adjective (Latin), target-shaped.

General Environment
This is a marine species.

Description
Thallus peltate, 20–30 mm in diameter and 870– 900 µm thick, with edges ruffled and shallowly or deeply dentate, attached to the substratum from its lower surface via a prominent peg-like central holdfast 5–7 mm long and 3–4 mm in diameter; reddish green, sometimes blotchy on upper surface. Medulla consisting mostly of rhizoidal filaments 2–5 µm in diameter with numerous secondary pit connections. Outer cortical cells elliptical, 6–7 mm in diameter; cells immediately below spherical to ovoid, 14–16 µm in diameter, refractive with much starch content; inner cortical cells large, stellate, multinucleate, 42–60 µm in diameter, with abundant secondary pit connections and issuing transversely traversing rhizoids. Carpogonial branch not seen. Cystocarps 1.0–1.5 mm in diameter, often spinose, with a dense ostiolate pericarp, protruding from the upper surface on special papillae issued from the thallus margins. Carposporophyte 545–800 µm in diameter, consisting of a central placenta of fused gametophytic and gonimoblast cells covered by a surface layer of outwardly directed ovoid carposporangia 7–11 µm in diameter. Spermatangia terminal on outer cortical cells, superficial in raised nemathecia. Tetrasporangia not seen.

Created: 18 February 2009 by M.D. Guiry.

Last updated: 14 December 2017

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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=134266

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 14 December 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 29 March 2024

 
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