Notophycus R.L.Moe, 1986

Holotype species: Notophycus fimbriatus R.L.Moe

Original publication and holotype designation: Moe, R.L. (1986). Notophycus fimbriatus (Solieriaceae), a new genus and species of marine Rhodophyceae from the Antarctic Peninsula. Phycologia 25: 544-550.

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Description: Plants reach 30 cm in length, are erect from a crustose base, and consist of numerous large, undivided blades on a branched, proliferous stipe. Blades are multiaxial, with a broad, laxly filamentous medulla of scattered stellate axial cells and numerous cylindrical rhizoids surrounded by isodiametric inner cortical cells and anticlinally elongate outer cortical cells. Both secondary pit connections and direct lateral cell fusions occur in the cortex. Carpogonial branches are (2-)3(-4) celled, the reflexed trichogyne being spirally coiled and the subtending carpogonial branch cells often markedly lobed. Following fertilization the carpogonium divides, each derivative giving rise to several connecting filaments. Cystocarps are entirely embedded in the blade and consist of a central reticulate fusion cell that does not incorporate proximal cells of the cortical filament bearing the auxiliary cell, the auxiliary cell being surrounded by relatively few layers of sterile gonimoblast cells which bear terminal clusters, rather than strict chains, of carposporangia. The pericarp is very rudimentary, is not lined by a filamentous hull, but has a distinct ostiole. Spermatangial mother cells cover large areas of the blade surface. Tetrasporangia are unknown.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2010-10-08 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Most recent taxonomic treatment adopted: Schneider, C.W. & Wynne, M.J. (2007). A synoptic review of the classification of red algal genera a half a century after Kylin's "Die Gattungen der Rhodophyceen". Botanica Marina 50: 197-249.

Comments: Moe (1986) allies Notophycus with the Areschougieae because of the multiple connecting filaments and relatively simple carposporophyte whose clusters, rather than chains, of carposporangia are otherwise reported only in the genus Callophycus. Distribution: This is the only representative of the family known from the cold Southern Ocean, where it occurs on rocks from 15-22 m depths along the western coast of the Antarctic Peninsula.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

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M.D. Guiry in Guiry, M.D. & Guiry, G.M. 08 October 2010. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 04 March 2024

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