Chylocladia Greville, 1833, nom. cons.

Holotype species: Chylocladia kaliformis (Goodenough & Woodward) Hooker

Currently accepted name for the type species: Chylocladia verticillata (Lightfoot) Bliding

Original publication and holotype designation: [Hooker, W.J.] (1833). Div. I. Inarticulatae. In: The English Flora of Sir James Edward Smith. Class XXIV. Cryptogamia. Vol. V. (or Vol. II of Dr. Hooker's British flora). Part I. Comprising the Mosses, Hepaticae, Lichens, Characeae and Algae. (Hooker, W.J. Eds), pp. 250-259. London: Longman, Brown, Green & Longmans Paternoster-Row.

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Description: Thallus with a small attachment disc and erect or arching fronds, divided into segments by septa and filled throughout with a watery mucilage, terete or slightly compressed, constricted at septa, branching variable, often whorled, not deciduous; multiaxial construction, producing a tubular inner cortex covered by an incomplete layer of smaller cells and lined inside by discrete parallel longitudinal filaments bearing inwardly-directed secretory cells adaxially and uniting with monostromatic septa between the segments. Gametangial plants dioecious; spermatangia in superficial sori, terminal on mother cells derived from cortical cells; procarpic, carpogonial branches in cortex, 4-celled, each with two 2-celled auxiliary cell branches, cystocarps protruding externally, carposporangia large, wedge-shaped, arising directly from large central fusion cell, enclosed within cortical pericarp without a pore, tela arachnoidea absent; large tetrasporangia scattered in the younger parts, intercalary in cortical filaments, tetrahedral, polysporangia unknown.

Information contributed by: M.D. Guiry. The most recent alteration to this page was made on 2017-01-24 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: Type species is widely distributed on western European and African coasts, and in the Mediterranean; the other species are more restricted in distribution to the Mediterranean, South Africa, and South Australia (Bliding 1828; Ercegovic, 1956; Reedman & Womersley 1976; Price et al. 1976) Kylin (1923), Bliding (1928), Reedman & Womersley (1976), and Irvine & Guiry (1983) describe anatomical and reproductive features of various species of Chylocladia. Buffham (1888) and Irvine & Guiry (1983) report cystocarps and tetrasporangia occurring simultaneously on field-collected plants which are likely the result of mitotic recombination of sexual alleles or similar genetic phenomena. Boillot (1961) describes the spore germination and early frond development in C. verticillata. Irvine & Guiry (1983) reported that the Polysiphonia-type life history of C. verticillata took only 12 weeks to complete at 20 °C with a 16-hour day. A chromosome number of n = ca. 20 has been reported in C. verticillata (Kylin 1923, as C. kaliformis). In the British Isles, C. verticillata is a spring annual in mid-intertidal rock pools, growing rapidly in February-May, reproducing, bleaching and dying back during the summer.

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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=118

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 24 January 2017. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 22 November 2024