Stoechospermum Kützing, 1843
Holotype species: Stoechospermum marginatum (C.Agardh) Kützing
Original publication and holotype designation: Kützing, F.T. (1843). Phycologia generalis oder Anatomie, Physiologie und Systemkunde der Tange. Mit 80 farbig gedruckten Tafeln, gezeichnet und gravirt vom Verfasser. pp. [part 1]: [i]-xxxii, -142, [part 2:] 143-458, 1, err.], pls 1-80. Leipzig: F.A. Brockhaus.
Taxonomic status: currently recognized as a distinct genus.
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.
Description: Thalli erect arising from a rhizoidal holdfast, up to 40 cm long, dichotomously-branched, branches 6-22 mm broad, complanate, without a midrib. Growth initiated from a short row of apical cells in an inrolled margin. Thallus constructed of a monostromatic outermost layer of small cortical cells overlying 7-8 layers of larger medullary cells, not regularly arranged in rows in transvere section. Sporangia forming in longitudinal marginal sori, dispersed among paraphyses, pyriform, 65-115 mm high and 15-60 mm across with one stalk cell. Antheridia in longitudinal marginal sori. The report of marginal oogonial sori (Misra 1966) requires confirmation. Stoechospermum is a poorly known genus which may prove to be monotypic as a second species from the Antilles, S. polypodioides (Lamouroux) J. Agardh has not been recorded since its description. Confusion surrounds the presence of hairs in the sporangial sorus of Stoechospermum marginatum. Papenfuss (1977) reported the presence of hairs within the sporangial sorus while Nizamuddin and Perveen (1986) observed large groups of hairs along the margins but not in sporangial sori. Tanzania to India and Ceylon.
Information contributed by: J. A. Phillips and R. J. King. The most recent alteration to this page was made on 20 Jun 2014 by M.D. Guiry.
Numbers of names and species: There are 5 species names in the database at present, of which 1 has been flagged as accepted taxonomically on the basis of the listed literature under the species name. In some instances, opinions on taxonomic validity differ from author to author and users are encouraged to form their own opinion. AlgaeBase is a work in progress and should not be regarded as a definitive source only as a guide to the literature..
Names: ('C' indicates a name that is accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
Click here to also show infraspecific names in the list below.
Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.
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.
Created: 28 December 2000 by M.D. Guiry
Verified by: 20 June 2014 by M.D. Guiry
Linking to this page: http://algaebase.org/search/genus/detail/?genus_id=42966
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 13 August 2020.