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Micrasterias (Charophyceae)

Micrasterias sp. from a lake in New Hampshire USA

Micrasterias sp. from a lake in New Hampshire USA

Micrasterias sp.
Photo by Jonathan Dufresne, University of New Hampshire, USA

Micrasterias foliacea cells after artificially separating them on a microscope slide. Because this species of Micrasterias normally occurs in a multicellular "ribbon" of interlocked cells due to pointed processes at each cell end, the species is also placed with filamentous desmids in this key. It is essentially a pseudofilament with cells "attached" but apparently not cemented with any extracellular metabolite (such as a mucopolysaccharide). Image by Jonathan Dufresne, University of New Hampshire, Durham, NH USA

Intact "ribbon" of Micrasterias foliacea
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH USA

Intact "ribbon" of Micrasterias foliacea
Image by Jonathan Dufresne, University of New Hampshire, Durham, NH USA

Micrasterias sp., 4 July 2010, Upper Carter Notch Pond
Collected by John C. Baker, University of New Hampshire, Durham, NH USA

Micrasterias sp., 4 July 2010, Upper Carter Notch Pond
Collected by John C. Baker, University of New Hampshire, Durham, NH USA

Micrasterias laticeps from Vermont-Maine U.S.A., August 7-13, 1999
Photographs at two focal planes, by Y. Tsukii, posted online

Micrasterias laticeps from Wheelwright Pond, Lee, NH USA, 1 Sep. 2015

Micrasterias pinnatifida from Kashibaru marsh, Karatsu city, Saga Pref., Japan, November 2006
Photograph from axenic culture by Y. Tsukii posted online

Micrasterias oscitans
Photograph by PROYECTO AGUA** /** WATER PROJECT's photostreamposted online

Micrasterias sp. from Stonehouse Pond, Barrington, New Hampshire USA, preserved in formalin-sucrose. Discovered by Robert Thomas, Field Lake Ecology, University of New Hampshire

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