Pterocladiella B.& , 1997
Holotype species: Pterocladiella capillacea (S.G.Gmelin) Santelices & Hommersand
Original publication and holotype designation: Santelices, B. & Hommersand, M. (1997). Pterocladiella, a new genus in the Gelidiaceae (Gelidiales, Rhodophyta). Phycologia 36: 114-119.
Taxonomic status: currently recognized as a distinct genus.
Most recent taxonomic treatment adopted: Bailey, J.C. & Freshwater, D.W. (1997). Molecular systematics of the Gelidiales: inferences from separate and combined analyses of plastid rbcL and nuclear SSU gene sequences. European Journal of Phycology 32: 343-352, 2 figs, 3 tables.
Description: Thallus erect from a holdfast of tangled stolons, distichously branched; branching irregularly alternate or regular and pinnate; branches strongly flattened distally. Structure uniaxial; medulla of thick-walled cells grading to a pigmented cortex of c. 3 cell layers; outermost cells slightly elongate anticlinally; elongate rhizines in the medulla and/or cortex. Spermatangia arising in sori on fertile branches. Female reproductive system with intercalary carpogonia directed towards both surfaces of the thallus; nutritive filaments originating from the basal cell of third-order filaments borne on second-order filaments situated alongside the central axis, then growing centripetally, forming a cylinder around the central axis. Gonimoblast filaments growing over the surface of the nutritive filaments; peglike protrusions from intercalary gonimoblast cells uniting with nutritive cells and forming a network. Gonimoblast cells surrounding the central core and linking to inner cortical cells on the lower side of the cystocarp where they do not form carposporangia; the rest producing carposporangia in basipetally maturing chains. Cystocarps attached to one side of the cystocarp floor, producing chains of carposporangia from the remaining three sides, seen as triangular in cross section. Tetrasporangia in sori.
Information contributed by: Huisman, Boo & Boo (2018).. The most recent alteration to this page was made on 26 Sep 2018 by M.D. Guiry.
Numbers of names and species: There are 26 species names in the database at present, as well as 3 infraspecific names. Of the species names, 24 have 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 January 2017 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=92
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 28 October 2020.