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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]
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).
Nostoc commune. Nostoc commune is found in many countries around the world. It is able to survive in extreme conditions in polar regions and arid areas. It is a terrestrial or freshwater species and forms loose clumps on soil, gravel and paved surfaces, among mosses and between cobbles. [1]
Fat choy (traditional Chinese: 髮菜; simplified Chinese: 发菜; pinyin: fàcài; Jyutping: faat³ coi³; Nostoc flagelliforme) is a terrestrial cyanobacterium (a type of photosynthetic bacteria) that is used as a vegetable in Chinese cuisine.
Nostoc commune var. sphaeroides is an edible cyanobacterium [1] found in diverse habitats such as lakes and rivers. It is used as a food and nutritional supplement and has reputed pharmaceutical properties.
Nostoc verrucosum is a species of cyanobacteria usually found in colonies and in globose racks. It has a greenish to blackish color. It has a greenish to blackish color. It grows in creek beds, shallow streams, waterfalls, and moist understory in rain forests, in alkaline soil and water habitat.
Nostoc parmelioides is a species of cyanobacterium in the family Nostocaceae. It is notable for its symbiosis with a midge larva, Cricotopus nostocicola . [ 1 ]
Nostoc punctiforme is a species of filamentous cyanobacterium. Under non-limiting nutritional environmental conditions, its filaments are composed of photosynthetic vegetative cells; upon nutrient limitation, some of these cells undergo differentiation into heterocysts , akinetes or hormogonia .