Scotiellopsis Vinatzer, 1975

Holotype species: Scotiellopsis rubescens Vinatzer

Currently accepted name for the type species: Coelastrella rubescens (Vinatzer) Kaufnerová & Eliás

Original publication and holotype designation: Vinatzer, G. (1975). Neue Bodenalgen aus den Dolomiten. Plant Systematics and Evolution 123: 213-235.

Description: Cells single, temporarily forming 2-4-(8) celled colonies. Autospores and young cells fusiform, citriform, adult cells often oval with distinct apical thickenings; old cells globose. Cell wall with meridional ribs converging at the poles; ribs straight, sometimes anastomosing to form a network. Ultrastructurally, cell wall with inner polysaccharide and outer trilaminar, acetoresistant layers. Cell walls thicken with age, peel off and can reform 2-3 times. Cells uninucleate, likely with centrioles; chloroplast parietal, consisting of polygonal plaques or stripes; in one part of the chloroplast with the pyrenoid having homogeneous stroma surrounded with starch envelope. Asexual reproduction by autospores, 2 (-16) per cell; released by rupture of parental cell wall. Rare globose spores much larger than vegetative cells formed with thick, layered cell wall; these may be associated with sexual reproduction. Flagellated stages unknown. Scotiellopsis in soil, wet ground; reported from Europe and China, probably cosmopolitan. Genus placed in subf. Scotiellocystoideae and distinguished from Chlorella based on cell wall structure and presence of acetoresistant material. Genus closely related to Coelastrella. Tetraedronaceae may be related to Pleurastrales or the class to which this order is assigned by some authors.

Information kindly contributed by T. Kalina but may now be outdated.

Taxonomic status: This name is currently regarded as a synonym of Coelastrella.

Most recent taxonomic treatment adopted: Kaufnerová, V. & Eliás, M. (2013). The demise of the genus Scotiellopsis Vinatzer (Chlorophyta). Nova Hedwigia 97(3-4): 415-428.

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44275

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 25 February 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 26 April 2024