Webervanbossea De Toni fil., 1936

Holotype species: Bindera splachnoides Harvey

Currently accepted name for the type species: Webervanbossea splachnoides (Harvey) G.De Toni

Original publication and holotype designation: De Toni, G. (1936). Noterelle di nomenclatura algologica. VII. Primo elenco di Floridee omonime. pp. 8. Brescia: Privately published.

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Description: Thallus with a discoid holdfast and erect, compoundly branched, tubular-compressed or saccate fronds containing a watery mucilage. Construction multiaxial, cortical cells in anticlinal rows, medullary cells large, septae absent, constrictions present at branch bases (W. sphlachnoides) or throughout the thallus (W. kaliformis). Secretory cells lateral, terminal or intercalary on filaments borne in groups on a stellate basal cell formed on the inner faces of the medullary cells, or directly on the stellate cell. Gametangial plants dioecious. Spermatangia subspherical to obovoid on outer cortical cells and covering most of the surface of the mature gametophyte. Carpogonial branches 3-celled. Cystocarps scattered, almost entirely submerged in the thallus wall, protruding mostly inwards, tela arachnoidea absent or poorly developed. Tetrasporangia in small, scattered, nemathecoid sori, arising in a terminal position laterally from cortical filaments. Spores regularly cruciately arranged.

Information contributed by: M.D. Guiry. The most recent alteration to this page was made on 2010-10-08 by M.D. Guiry.

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

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: Webervanbossea is characterized by a saccate thallus lacking medullary rhizoids, the presence of secretory cells terminally on filaments formed on a stellate cell, the formation of tetrasporangia in nemathecoid sori, and a tela arachnoidea in the cystocarp. Huisman (1994) has described the structure and reproduction of W. sphlachoides, the generitype and suggests that the auxiliary cell may be produced after rather than before fertilization (see Dixon 1964). Nothing is known of the life history of the two species referred to the genus. Webervanbossea sphlachnoides and W. kaliformis (Harvey) De Toni fil. are known only from Western Australia (Harvey 1859, pl. cxi, as Bindera) and Southern Australia (Womersley 1950). W. splachnoides occurs on rocks, often associated with sand, to depths of 5-35 m.

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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. 08 October 2010. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 18 June 2024

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