Pterosiphonia Falkenberg, 1897

Holotype species: Pterosiphonia cloiophylla (C.Agardh) Falkenberg

Original publication and holotype designation: Schmitz, F. & Falkenberg, P. (1897). Rhodomelaceae. In: Die natürlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren Arten insbesondere den Nutzpflanzen unter Mitwirkung zahlreicher hervorragender Fachgelehrten, Teil 1, Abteilung 2. (Engler, A. & Prantl, K. Eds), pp. 421-480. Leipzig: verlag von Wilhelm Engelmann.

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Description: Thalli with compressed erect axes arising from a terete basal system; polysiphonous with 5(–6) pericentral cells; pericentral cells usually obscured by cortication (one to several layers); branching alternate and distichous, proximal segments of laterals congenitally fused with the bearing axis over 2–8 segments; vegetative trichoblasts lacking; prostrate system attached to the substrate by unicellular rhizoids. Tetrasporangia tetrahedral, developing in straight series near the apex, one per segment. Gametophytes dioecious, cystocarps or spermatangial branches developing subapically on laterals; spermantangial branches cylindro-conical, either lacking sterile apical cells or with 1(–3) sterile apical cells; cystocarps globular.

Information contributed by: A.M.Savoie & G.W.Saunders. The most recent alteration to this page was made on 2016-10-08 by M.D. Guiry.

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

Most recent taxonomic treatment adopted: Savoie, A.M. & Saunders, G.W. (2016). A molecular phylogenetic and DNA barcode assessment of the tribe Pterosiphonieae (Ceramiales, Rhodophyta) emphasizing the Northeast Pacific. Botany 94: 917-939, 8 figs.

Comments: Occurring on rocks or as epiphytes, littoral to subtidal, in temperate to tropical regions in widespread localities in the Atlantic and Indo-Pacific Oceans.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=33076

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 08 October 2016. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024