Acrocystis Zanardini, 1872

Holotype species: Acrocystis nana Zanardini

Original publication and holotype designation: Zanardini, G. (1872). Phycearum indicarum pugillus a Cl. Eduardo Beccari ad Borneum, Sincapoore et Ceylanum annis MDCCCLXV-VI-VII collectarum quas cognitas determinavit, novasque descripsit iconibusque illustrare curavit Joannes Zanardini. Memorie del Reale Istituto Veneto di Scienze, Lettere ed Arti 17: 129-170, 12 pls.

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Description: Thallus with prostrate rhizomatous cylindrical axes bearing erect branches of similar form, or with a terminal bulbous vesicle. Structure uniaxial, with 5 pericentral cells, those in the cylindrical axes developing into a pseudoparenchymatous medulla and a cortex of smaller cells. Pericentral cells of vesicles radially elongate, traversing the central cavity and branching to form the wall of the vesicle. Vesicle wall with 3–6 cell layers, the inner of large hyaline cells, those towards the surface progressively smaller and becoming pigmented. Trichoblasts present at the apices of some vesicles. Tetrasporangia tetrahedral, borne on pericentral cells of stichidia arising near the apices of vesicles, with up to 5 sporangia per segment. Spermatangia, carpogonia and cystocarps unknown.

Information contributed by: J.M. Huisman (2018).. The most recent alteration to this page was made on 2018-10-08 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Gil-Rodríguez, M.C. & Haroun, R. (2002). Vegetative and reproductive phenology of Chondrophycus perforatus and Laurencia viridis (Rhodomelaceae, Rhodophyta) in Tenerife, Canary Islands. Constancea 83.20: .

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=35583

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 08 October 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 21 November 2024