Binghamiopsis I.K.Lee, J.A.West et Hommersand, 1988

Holotype species: Binghamiopsis caespitosa I.K.Lee, J.A.West & M.H.Hommersand

Original publication and holotype designation: Lee, I.K., West, J.A. & Hommersand, M.H. (1988). Binghamiopsis caespitosa gen. et sp. nov. (Lomentariaceae, Rhodophyceae) from the eastern Pacific. Korean Journal of Phycology 3: 1-13, 48 figs.

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Precise date of publication: 25 Jun 1988

Description: Thallus erect, terete or compressed, filled throughout with a watery mucilage, not constricted into segments, branching dichotomous or trichotomous with adventitious pinnate branches; multiaxial construction, cortex tubular, 3-6 cell layers lined inside with a network of loosely interwoven medullary filaments bearing inwardly-directed secretory cells; septa and lacunae absent. Gametangial plants dioecious; spermatangia in superficial sori, terminal on mother cells derived from cortical cells; procarpic, carpogonial branches 3-celled, with a single, 2-celled auxiliary cell branches, gonimoblast developing outwards, most cells forming carposporangia, cystocarps scattered, protruding externally, with a prominent pore and rostrum; tetrasporangia terminal on cortical filaments, in sori in depressions formed by invagination of cortex, tetrahedral, polysporangia unknown.

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: B. caespitosa I. K. Lee, J. A. West et Hommersand is known only from Monterey County, California and Baja California, Mexico. Plants from California were grown in culture by Lee, West & Hommersand (1988) and, although evidence for a Polysiphonia-type life history was found, sexual self-incompatibility was observed in gametangial plants derived from the same population, and the life history could not be completed.

Binghamiopsis differs from other genera of the Lomentariaceae and Champiaceae in the absence of cellular septae or lacunae dividing the medullary cavity and the presence of interwoven medullary filaments in a manner similar to that found in Cenacrum (Rhodymeniaceae).

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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=42815

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 08 October 2010. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 29 March 2024

 
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