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Nostoc, also known as star jelly, troll's butter, spit of moon, fallen star, witch's butter (not to be confused with the fungi commonly known as witches' butter), and witch's jelly, is the most common genus of cyanobacteria found in a variety of both aquatic and terrestrial environments that may form colonies composed of filaments of moniliform cells in a gelatinous sheath of polysaccharides. [1]
Viridothelium sinuosogelatinosum is a species of crustose lichen in the family Trypetheliaceae. [1] This corticolous (tree bark-dwelling) lichen is characterised by its pale olivaceous-brown thallus and its unique ascospores, which are surrounded by a wavy gelatinous sheath.
It initially forms a small, hollow gelatinous globule which grows and becomes leathery, flattened and convoluted, forming a gelatinous mass with other colonies growing nearby. Inside the thin sheath are numerous unbranched hair-like structures called trichomes formed of short cells in a string. The cells are bacteria and thus have no nucleus ...
The Nostocaceae are a family of cyanobacteria that forms filament-shaped colonies enclosed in mucus or a gelatinous sheath. Some genera in this family are found primarily in fresh water (such as Nostoc), while others are found primarily in salt water (such as Nodularia).
Gloeocapsa (from the Greek gloia (gelatinous) and the Latin capsa (case)) is a genus of cyanobacteria. [2] The cells secrete individual gelatinous sheaths which can often be seen as sheaths around recently divided cells within outer sheaths. Recently divided cell pairs often appear to be only one cell since the new cells cohere temporarily.
This order includes cyanobacteria of filamentous forms, either simple or branched, both of which occur as single strands or multiple strands within a sheath. Family – Nostocaceae This family of cyanobacteria forms filament-shaped colonies enclosed in mucus or a gelatinous sheath.
These species form bundled filaments that are surrounded by a gelatinous sheath of polysaccharides. These filaments bind soil particles throughout the uppermost soil layers, forming a 3-D net-like structure that holds the soil together in a crust.
As the cells enter the stationary phase of their growth cycle, they do not increase significantly in size, but instead develop a gelatinous sheath around each individual cell, measuring 1.5 to 2 μm in thickness. [1]