Catenella Greville, 1830, nom. cons.

Holotype species: Catenella opuntia (Goodenough & Woodward) Greville

Currently accepted name for the type species: Catenella caespitosa (Withering) L.M.Irvine

Original publication and holotype designation: Greville, R.K. (1830). Algae britannicae, or descriptions of the marine and other inarticulated plants of the British islands, belonging to the order Algae; with plates illustrative of the genera. pp. [i]-lxxxviii, [1]-218, pl. 1-19. Edinburgh & London: McLachlan & Stewart; Baldwin & Cradock.

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Description: Plants reach 2-5 cm in height, are terete to slightly flattened, segmented, and branched from the nodes. Axes are often rampant and imbricating, and are attached by lateral haptera. Erect axes are generally short (ca. 2-3 cm in length). Central axial cells each bear 2 periaxial cells, but the central filaments are indistinct among the reticulate cells of the broad medulla. A broad, filamentous inner cortex grades to a shallow, anticlinal outer cortex. Carpogonial branches are usually 2- or 3-celled, the basal cell bearing one or several sterile cells. Two or three connecting filaments arise from fertilized carpogonia, and gonimoblast development is primarily inward. Carposporophytes produce chains of carposporangia, the cystocarps being ostiolate but lacking a filamentous sheath. Spermatangial clusters and tetrasporangia are scattered (Min-Thein and Womersley, 1976).

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2021-11-26 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: 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: Distribution: This is the most widespread member of the family, the type species coming from southern Wales and other representatives being common throughout the world's tropics and subtropics, often as a conspicuous element of the floras on mangrove pneumatophores. Post (1936), Tseng (1942), and Min-Thein and Womersley (1976 have contributed major studies of the genus.

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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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. 26 November 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 22 April 2024

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