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Spondylosium (Charophyceae)

Spondylosium sp.
A hint of the presence of a mucilaginous sheath is in the spikey radiations around individual cells.
India ink or chrystal violet stain exposes such thin sheaths. Photograph by L. Gorm, Edinburgh Napier College, Scotland

Spondylosium sp. with extensive but watery mucilage sheath.
Image by John Dufresne, University of New Hampshire, Durham USA

Spondylosium sp. from a Winkley Pond, Barrington, New Hampshire USA, Nov. 2011

Spondylosium sp. from a Swain's Lake, Barrington, New Hampshire USA, Nov. 2011

Spondylosium planum (Wolle) W. & G.S. West
Modified from sketch by Thérézien, Y. and A. Couté (1977) from the collection of Manfred Bölter, University of Kiel, DE

Thérézien, Y. and A. Couté 1977. Algues d’eau douce des Îles Kerguelen et Crozet. Comite Nation Franc Rech Antarct 43: 1-91

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