Schmidleinema G.De Toni, 1936

Holotype species: Schmidleinema indicum (Schmidle) G.De Toni

Original publication and holotype designation: De Toni, G. (1936). Noterelle di nomenclatura algologica. VIII. Terzo elenco di Missoficee omonime. pp. 6. Brescia.

Description: Thallose; thallus forms mats on the substrate or mixed with other algae, composed of basal, prostrate filaments creeping on the substrate and more or less erect branches; basal trichomes torulous, uni- or multiseriate, true or falsely branched, constricted at cross walls, prostrate or semicircular bent; branches cylindrical, uniseriate, creeping or erect, mainly falsely, repeatedly, tolypotrichoid branched. Sheaths distinct, 1imited, thick, lamellated, closed or funnel-like open at the apex, sometimes telescopic, usually (in some parts) yellow-brown. Cells barrel-shaped or almost cylindrical, pale or olive-green, slightly or regularly granular, sometimes with distinct solitary granules. Heterocytes develop intercalary, solitary or in pairs, usually unipored (before false branching), cylindrical, hemispherical or almost spherical. Akinetes not found. Cells divide in old creeping filaments in different planes, in young trichomes and branches perpendicular to the long trichome axis; in the apical parts of branches occur meristematic zones. Reproduction by motile hormogonia developing from ends of branches and ensheathed hormocysts, which differentiate in basal or apical parts of thallus. Hormogonia and hormocysts germinate at both sides; in their center develop usually heterocytes, which become to be basal ones during the later development. Tropical aerophytic and freshwater species. The type species is known from humid, subaerophytic biotopes (epiphytic on liverworts, tree-trunks, on humid walls, etc.) in India, two other species are known from swamps in Antilles (alkaline swamps in Cuba; Guadeloupe).

Information contributed by: J. Komárek. The most recent alteration to this page was made on 2023-03-06 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 neuter.

Most recent taxonomic treatment adopted: Strunecký, O., Ivanova, A.P. & Mares, J. (2022 '2023'). An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis (Review). Journal of Phycology 59(1): 12-51.

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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=46471

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 25 April 2024