Croasdalea Bicudo & Mercante, 1993

Holotype species: Croasdalea marthae (Grönblad) C.E.M.Bicudo & Mercante

Original publication and holotype designation: Bicudo, C.E.M. & Mercante, C.T.J. (1993). Croasdalea, new genus of asymmetrical desmid Zygnemaphyceae. Cryptogamic Botany 3: 270-272, 5 figs.

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Description: Cellula parva, medio sinu late aperto, profunde constricta; semicellulae inter se dissimiles, habitu trapeziformes, anguli in aculeis solidis longis curvatis exeuntes, aculei omnes semicellulae superioris sursum curvati, at aculei semicellulae inferioris quoque in directionem eandem (= sursum) curvati; massa chlorophyllacea axilis, e laminis lamellae modicae in angulis exeuns, monocentrica. Cell small, deeply constricted in the middle, median sinus open, acute-angled; semicells distinct one from the other, somewhat trapeziform, all angles somewhat projected and tipped with a single, solid, long spine; spines of upper semicell all upwardly curved, those of the lower semicell less curved than and somewhat parallel to those of the upper semicell; chloroplast axial, steloid, monocentric.

Information contributed by: Original description.. The most recent alteration to this page was made on 2022-12-28 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Guiry, M.D. (2013). Taxonomy and nomenclature of the Conjugatophyceae (=Zygnematophyceae). Algae. An International Journal of Algal Research 28: 1-29.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=45344

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 28 December 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 25 April 2024