153,600 species and infraspecific names are in the database, 20,980 images, 59,403 bibliographic items, 411,227 distributional records.

Lithotrichon Darienko & Pröschold, 2017

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Viridiplantae
Infrakingdom Chlorophyta infrakingdom
Phylum Chlorophyta
Subphylum Chlorophytina
Class Ulvophyceae
Order Ulvales
Family Kornmanniaceae

Holotype species: Lithotrichon pulchrum Darienko & Pröschold

Original publication and holotype designation: Darienko, T. & Pröschold, T. (2017). Toward a monograph of non-marine Ulvophyceae using an integrative approach (Molecular phylogeny and systematics of terrestrial Ulvophyceae II.). Phytotaxa 324(1): 1-41, 23 figs.
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Taxonomic status: currently recognized as a distinct genus.

Gender: This genus name is currently treated as neuter.

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, [1]-288, 182 figs. Berlin: Springer Spektrum.

Description: Plants in liquid 1/2 SWES medium up to 0.5 mm consist of prostrate and erected filaments. The system of prostrate filaments is very prominent and is formed from three-dimensional packages. The vegetative cells of the prostrate system are rounded or compressed from the sides, 5.9–8.8 µm in diameter, with a thick cell wall. Vegetative cells usually contain one or two large vacuoles. The erect system formed from short filaments consists of several cells (max. 10 cells). The end cells of plants are cylindrical, sometimes curved, 12.0–23.5 µm long × 3.5–5.5 µm wide and generally 2–4 times longer than broad. Branching is mostly bilateral. Cells are usually uninucleate, but sometimes the longest cells contain two nuclei and two pyrenoids (state before dividing?). Chloroplasts are parietal, usually filling the cell, with a pyrenoid. Zoosporangia are oval and approximately 16.2 ?m in diameter, containing 8 zoospores. Zoospores are ovoid, 7.0–7.5 ?m long × 4.0–4.5 ?m wide with an anterior stigma. Zoospores are released by sudden fracture of the cell wall.

Origin of description: this description is from the original publication; it may have been modified slightly.

Numbers of names and species: There is only one species or infraspecific name in the database at present, which has 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.

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.

Created: 09 October 2017 by M.D. Guiry

Verified by: 14 March 2018 by M.D. Guiry

Linking to this page: http://www.algaebase.org/search/genus/detail/?genus_id=52322

Citing AlgaeBase
Please cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2018. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 17 November 2018.

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