Paralemanea (P.C.Silva) M.L.Vis & Sheath, 1992

Holotype species: Lemanea nodosa Kützing

Currently accepted name for the type species: Paralemanea catenata (Kützing) M.L.Vis & Sheath

Original publication and holotype designation: Vis, M.L. & Sheath, R.G. (1992). Systematics of the freshwater red algal family Lemanaceae in North America. Phycologia 31(2): 164-179.

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Description: Thalli monoecious; cartilaginous, pseudoparenchymatous tubular; olive green, violet to black in color; narrow at the base, gradually becoming wider (unstalked) and divided into wider nodes and narrower internodes; spermatangia arranged in rings that is usually a broad, contiguous band around nodes or can be a narrow sometimes interrupted bands; carpogonia not observed in most species, but in the internodes based on the placement of the carposporophytes; mature carposporophytes filling the whole of the internodal region, sometimes extending into nodal region; internal construction consisting of central axis with abundant cortical filaments; in longitudinal section, “ray” cells from the central axis to the outer cortex simple, not abutting cortex; cortex composed of small photosynthetic cells on the outside and one or more layers of larger non-photosynthetic cells on the interior; carposporophytes develop within the thallus in the internodal regions, often filling this region at maturity; carposporangia sub-spherical, obovoidal, or ellipsoidal, often produced in chains.

Information contributed by: Vis & Necchi (2021: 225-226). The most recent alteration to this page was made on 2022-04-19 by M.D. Guiry.

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

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Sheath, R.G. (2003). Red Algae. In: Freshwater Algae of North America, Ecology & Classification. (Wehr, J.D. & Sheath, R.G. Eds), pp. 197-224. San Diego: Academic Press.

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=42776

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 19 April 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 27 November 2024