Norrissia Balakrishnan, 1980

Holotype species: Norrissia setchellii (Kylin) Balakrishnan

Original publication and holotype designation: Balakrishnan, M.S. (1980). Taxonomic studies on U.S. Pacific Cryptonemiaceae I. Two new genera: Isabbottia and Norrissia. In: Taxonomy of algae. Papers presented at the International Symposium on Taxonomy of Algae held at the Centre of Advanced Study in Botany, University of Madras, December 9-16, 1974. (Desikachary, T.V. & Raja Rao, V.N. Eds), pp. 273-286. Madras: University of Madras..

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Description: Flattened, lanceolate, with surface and marginal proliferations, themselves sometimes proliferous. Stipe short. Medulla of periclinal filaments intermixed with rhizoids. Cortex of oblong to spherical cells, progressively smaller toward cuticle. Carpogonial branch 3-4-celled, not found in ampulla; supporting cell with a one-celled sterile lateral. Auxiliary cell subterminal on a primary ampullar filament, within a separate ampulla with branching to four orders. Fertilized carpogonium initiating connecting filaments directly, each contacting a single auxiliary cell. Distinct gonimolobes developing from gonimoblast initial. Spermatangia apparently undescribed. Tetrasporophyte isomorphic. Tetrasporangia small, cruciate, attached sub-basally within the cortex.

Information contributed by: S.C. Lindstrom & J.A. Lewis. 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.

Gender: This genus name is currently treated as feminine.

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: Known only from the northeast Pacific: southern British Columbia to central California. Requires reinvestigation.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=42241

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 25 April 2024