Sphaeropleales

Description: Sorastrum spinulosum Nägeli. Date: 1849. Source: Nägeli, C. 1849. Gattungen einzelliger Algen, physiologisch und systematisch bearbeitet. Neue Denkschriften der Allgemeinen Schweizerischen Gesellschaft für die gesammten Naturwissenschaften 10(7): 1–139. Plate V: fig. D https://www.biodiversitylibrary.org/page/6263869 (cropped for fig. D). Author: Carl Wilhelm von Nägeli (1817–1891). Permission(Reusing this file): : This file comes from the Biodiversity Heritage Library. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Deutsch | English | español | français | italiano | македонски | Nederlands | polski | +/−.

Description: Micrasterias tetras Ehrenberg = Stauridium tetras (Ehrenberg) E.Hegewald. Date: 1838. Source: Ehrenberg, C.G. 1838. Die Infusionsthierchen als vollkommene Organismen. Ein Blick in das tiefere organische Leben der Natur. Plate XI: fig.1 https://www.biodiversitylibrary.org/page/46495331 (cropped for fig. 1). Author: Christian Gottfried Ehrenberg (1795–1876). Permission(Reusing this file): : This file comes from the Biodiversity Heritage Library. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Deutsch | English | español | français | italiano | македонски | Nederlands | polski | +/−.

Description: Tetraedron sp. Date: 18 September 2007. Source: http://www.epa.gov/glnpo/image/viz_nat6.html. Author: Environmental Protection Agency. Permission(Reusing this file): US Federal Government.

Description: Tetrallantos lagerheimii Teiling. Date: 1916. Source: Teiling, E. 1916. Schwedische Planktonalgen. II. Tetrallantos, eine neue Gattung der Protococcoideen. Svensk Botanisk Tidskrift 10(1): 59–66. Page 63: figs 1-7. https://www.biodiversitylibrary.org/page/44237617 (cropped for figs 1-7). Author: Einar Teiling (1888–1974). Permission(Reusing this file): : This file comes from the Biodiversity Heritage Library. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Deutsch | English | español | français | italiano | македонски | Nederlands | polski | +/−.

Description: Eutetramorus globosus Walton. Date: 1918. Source: Walton, L.B. 1918. Eutetramorus globosus, a new genus and species of algae belonging to the Protococcoidea (Family Coelastridae). Ohio Journal of Science 18: 126–128. Page 126, fig. https://www.biodiversitylibrary.org/page/3804834 (cropped for fig.). Author: Lee Barker Walton (1871–1937). Permission(Reusing this file): : This file comes from the Biodiversity Heritage Library. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Deutsch | English | español | français | italiano | 日本語 | македонски | Nederlands | polski | +/−.