GNU Webster's 1913
- n. (Bot.) A genus of algæ. The plants are composed of moniliform cells imbedded in a gelatinous substance.
“A compound isolated from a cyanobacterium, a type of blue-green algae known as Nostoc, shows promise ...”
“Nitrogen fixation and photosynthesis in high arctic forms of Nostoc commune.”
“Two alga-like creatures that are actually blue-green bacteria sometimes figure in the kitchen: the nutritional supplement spirulina and the Chinese “hair vegetable” or “hair moss,” species of Nostoc, which grows in mountain springs in the Mongolian desert.”
“Colonies of _Nostoc_ are constantly found living in some of the mucilage slits which then become enlarged.”
“_Nostoc_ are constantly found in the Anthocerotaceae and in _Blasia_.”
“The ventral surface bears flat scales in addition to the concave scales which, as mentioned above, are inhabited by _Nostoc_.”
“_Collema_ (Fig. 44, _C_, _D_, _E_), a dark greenish, gelatinous form, growing on mossy tree trunks, and looking like a colony of _Nostoc_, which indeed it is, but differing from an ordinary colony in being penetrated everywhere by the filaments of the fungus growing upon it.”
“(_Collema_), showing the _Nostoc_ individuals surrounded by the fungus filaments, × 300.”
“_Diatomaceae, _ and of the species of _Nostoc_ and _Hormosiphon, _ which occurred in great profusion, and under several forms, sometimes attaining a very large size (several inches across), especially in the districts of Le and Piti, and where the soil or waters were impregnated with saline matters.”
“One species is mentioned by Dr. Thomson as floating, without any attachment, in the shallow water of the pools scattered over the plains, on the Parang River, separated only by a ridge of mountains from Piti, broad and foliaceous, and scarcely different from the common _Nostoc, _ which occurs in all parts of the globe.”
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