Phycopeltis Millardet, 1870
Holotype species: Phycopeltis epiphyton Millardet
Original publication and holotype designation: Millardet, M.A. (1870). De la germination des zygospores dans les genres Closterium et Staurastrum et sur un genre nouveau d'algues chlorosporées. Mémoires de la Société des Sciences Naturelles de Strasbourg 6: 37-51, 1 pl.
Taxonomic status: currently recognized as a distinct genus.
Gender: This genus name is currently treated as feminine.
Most recent taxonomic treatment adopted: Škaloud, P., Rindi, F., Boedeker, C. & Leliaert, F. (2018). Süßwasserflora von Mitteleuropa. Freshwater flora of central Europe. Bd 13. Chlorophyta: Ulvophyceae (Krienitz, L. ed.). pp. [i]-vii, -288, 182 figs. Berlin: Springer Spektrum.
Description: Thallus consisting of a single-layered disc formed by coalescence of radiating, laterally appressed dichotomous filaments. The shape of the disc ranges from perfectly circular to very lobed and irregular; in some species the disc has an open branched habit, due to the development of separate systems of branched filaments called ramuli (ramulate forms). Gametangia intercalary or terminal, deriving from transformation of vegetative cells whose contents divide producing gametes. Gametangial cells may conserve the original size and shape, or become considerably swollen. When mature, the gametes are released through an ostiole formed on the dorsal side of the gametangium. Sporangiate laterals solitary, sessile on the surface of the disc or borne at the top of a sporangiophore. In the zoosporangium, the ostiole is opposite to the end of attachment. The life history is believed to consist of an alternation of two generations with identical morphology, a haploid gametophyte reproducing sexually by gametes, and a diploid sporophyte reproducing asexually by zoospores. In some species gametangia and zoosporangia occur on separate thalli. In other species gametangia and zoosporangia may be found on the same thalli; in such cases, it is presumed that these specimens are gametophytes able to reproduce asexually. In some species sterile hairs or glandular papillae are produced on the surface of the thallus. Species of Phycopeltis are usually epiphytic on leaves, stems or other parts of vascular plants; less frequently they occur on inanimate substrata, such as rocks, metal and plastic surfaces.
Information contributed by: Skaloud et al. (2018: 219).. The most recent alteration to this page was made on 6 Oct 2020 by M.D. Guiry.
Comments: Circumtropical and subtropical, with few species in temperate regions. Thalli generally noninvasive, supracuticular epiphytes of leaves, fruits and stems of vascular plants, but also reported from nonliving substrates. As in related genera Cephaleuros and Trentepohlia, Phycopeltis is often lichenized.
Numbers of names and species: There are 34 species names in the database at present, as well as 2 infraspecific names. Of the species names, 25 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.
Brooks, F., Rindi, F., Suto, Y., Ohtani, S. & Green, M. (2015). The Trentepohliales (Ulvophyceae: Chlorophyta): an usual algal order and its novel plant pathogen, Cephaleuros. Plant Disease 99(6): 740-753.
Zhu, H., Hu, Z.Y. & Liu, G.X. (2017). Morphology and molecular phylogeny of Trentepohiales (Chlorophyta) from China. European Journal of Phycology 52(3): 330-341.
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: 11 April 2002 by M.D. Guiry
Verified by: 06 October 2020 by M.D. Guiry
Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=43520
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 April 2021.