Meredithia opuntioides G.W.Saunders & C.W.Schneider 2014
Publication Details
Meredithia opuntioides G.W.Saunders & C.W.Schneider 2014: 182, fig. 7C, D
Published in: Schneider, C.W., Saunders, G.W. & Lane, C.E. (2014). The monospecific genus Meredithia (Kallymeniaceae, Gigartinales) is species rich and geographically widespread with species from temperate Atlantic, Pacific, and Indian Oceans. Journal of Phycology 50(1): 167-186, 8 figs.
Publication date: 17 February 2014
Type Species
The type species (lectotype) of the genus Meredithia is Meredithia microphylla (J.Agardh) J.Agardh.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Type Information
Type locality: "Burying Point Ground, Tasmania, Australia, 43.44013° S, 146.98883° E, depth 6 m on invertebrate hosts."; (Schneider, Saunders & Lane 2014: 183) Holotype: G.W. Saunders & K. Dixon GWS015278; January 21, 2010; UNB; (Schneider, Saunders & Lane 2014: 183)
Origin of Species Name
Adjective (Latin), resembling the genus Opuntia.
General Environment
This is a marine species.
Description
Plants typically associated in small clumps, individual plants 2.0-3.5 cm in diameter, typically slightly wider than tall. Individuals stipitate, the stipe ~1 mm wide and 1-2 mm tall and bearing a single blade, this blade in turn bearing stipitate secondary marginal blades, this pattern continuing in some collections to produce the opuntioid morphology characteristic in exemplars of this species, individual blades variable in size, 0.25-2.5 cm in diameter. Margins smooth and even, but at times irregular (notably where new blades are developing) and broadly undulate. Blades 200-350 µm thick in longitudinal section near the margin, composed of a moderately filamentous medulla, 2-3 layered inner cortex with cells becoming stellate towards the former and typically 1-3 layered outer cortex (slightly dorsiventral, cortical cells 3-5 µm wide, 5-9 µm tall versus 3-5 µm wide, 5-7 µm tall on the ventral and dorsal surfaces, respectively). Many medullary filaments are distinctive, up to 8 m wide and obviously containing multiple refractive inclusions. Cystocarps variously distributed across the blade, not marginal, protuberant on both surfaces, with a single ostiole; monocarpogonial(?). Best identified by comparison to the type COI-5P barcode sequence (GenBank: HM917677).
Created: 17 February 2014 by M.D. Guiry.
Last updated: 22 February 2014
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=148519
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 22 February 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 19 April 2024
