Halonema Jaasund, 1951

Holotype species: Halonema subsimplex Jaasund

Original publication and holotype designation: Jaasund, E. (1951). Marine algae from northern Norway, I. Botaniska Notiser 1951: 128-142.

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Description: Thallus filiform, erect to 15 cm high, sparsingly branched, epiphytic on Chordaria. Axis a monopodially branching filament, whose meristematic region is subapical above the youngest ramifications. Cortex of 2 to 3-celled short assimilatory filaments (paraphyses) with slightly swollen terminal cell, hyaline hairs and plurilocular sporangia. The hairs show an elongated basal cell followed by an intercalary meristem similar to the hairs in Phaeostroma. Plurilocular sporangia pear- to heart-shaped, irregularly roundish, transformed from terminal cells of paraphyses. Unilocular sporangia not known.

Information contributed by: A. F. Peters. The most recent alteration to this page was made on 2014-06-20 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Silberfeld, T., Rousseau, F. & Reviers, B. de (2014). An updated classification of brown algae (Ochrophyta, Phaeophyceae). Cryptogamie Algologie 35(2): 117-156, 1 fig., 1 table.

Comments: Reported from both sides of the cold-temperate part of the North Atlantic Ocean.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=38170

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 20 June 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 December 2024