Faucheopsis Kylin, 1931

Holotype species: Faucheopsis coronata (Harvey) Kylin

Original publication and holotype designation: Kylin, H. (1931). Die Florideenordung Rhodymeniales. Acta Universitatis Lundensis 27(11): 1-48, 8 figs, 20 pls.

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Description: Thallus with a discoid holdfast and erect, solid, flattened, flabellate, dichotomous, lubricous fronds. Construction multiaxial, cortical cells small, in branched, anticlinal rows, medulla of large cells. Subcortical network of anastomosing cells absent, rhizoidal network developing on medullary cells. Spermatangia unknown. Early stages of female gametangial development unknown. Cystocarps ostiolate, scattered, becoming coronate with age, protruding strongly outwards. Tetrasporangia small, scattered, apparently not in nemathecial sori. Spores regularly cruciately arranged. Nothing is known of the life history or seasonality of species of Faucheopsis.

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: Saunders, G.W., Strachan, I.M. & Kraft, G.T. (1999). The families of the order Rhodymeniales (Rhodophyta): a molecular-systematic investigation with a description of Faucheaceae fam. nov. Phycologia 38: 23-40.

Comments: Faucheopsis was proposed by Kylin (1931: 9) on the basis of "rhizoids" observed between the large medullary cells in the type species (Harvey, 1859, pl. 97, as Callophyllis coronata). The development of the carposporophytes and the tetrasporangia of Faucheopsis species have not been described in detail. Womersley (1996: 91) concludes that this genus "…is closely related to Gloiocladia (q.v.) but is less mucilaginous and firmer, the cortex is thicker and compact, with dense anticlinal filaments of small cells branched mainly only near where they are attached to the inner cortical cells…, the medullary cells are thick walled and without the numerous secondary pit connections of Gloiocladia, and the rhizoidal filaments between the medullary cells are far denser and more prominent than in the latter. The cystocarps of Faucheopsis are less prominently horned, often smooth until relatively old." Faucheopsis coronata occurs in the subtidal of Victoria (Harvey 1859, pl. 97) and South Australia (Womersley 1996). F. tasmanica (J. Agardh) May (May 1965) is Australophyllis harveyana (J. Agardh) Womersley & R.E. Norris (Womersley 1996: 91). Womersley also quesitoned a New Zealand record (Chapman & Dromgoole 1970) of F. coronata.

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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.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=42812

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 02 October 2022

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