Antrocentrum Kraft & Min-Thein, 1983

Holotype species: Antrocentrum nigrescens (Harvey) Kraft & Min-Thein

Original publication and holotype designation: Kraft, G.T. & Min-Thein, U. (1983). Claviclonium and Antrocentrum, two new genera of Acrotylaceae (Gigartinales, Rhodophyta) from southern Australia. Phycologia 22: 171-183, 35 figs.

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Description: Plants reach 20 cm in length, are epiphytic or epilithic, grow from a basal cluster of fibers and stolons, and are terete, irregularly radially branched, and generally mostly hollow. Axes are uniaxial, the axial cells each giving rise to 2 periaxial fascicles, but central axes are traceable only in very young branch tips. The medulla fills most of the cross-section and is very laxly filamentous, the medullary filaments giving rise abruptly to one or two inner cortical layers of large subisodiametric cells bearing 1-2 outer cortical layers in a pattern of rosettes. Supporting cells are monocarpogonial, and carpogonial branches are 3-celled. Gonimoblasts line a cavity bordered by nutritive filaments, the cystocarps being entirely embedded in the axes and communicating to the surface by a rupture in the cortex. Carposporangia are single and terminal. Tetrasporangia are dispersed through the outer cortex and are attached.

Information contributed by: G.T. Kraft. The most recent alteration to this page was made on 2021-06-18 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Kraft, G.T. & Saunders, G.W. (2021). The Acrotylaceae (Gigartinales) revisited: molecular data indicate family-level differences in one of the most enigmatic red-algal families. Australian Systematic Botany 34(3): 305-326, 13 figs, 1 table.

Comments: Distribution: Plants grow on open coasts from low intertidal to at least 18 m depths; endemic to Australia, recorded from the Perth region (Western Australia) eastward to eastern Victoria and the northern coast of Tasmania.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=39892

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 18 June 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 28 November 2024