Several cities in Russia were built around fortresses called kremlins. Russians built kremlins for defense during the Middle Ages. A kremlin was often located along a river.

Such abilities were demonstrated by several fungal taxa (e.g. Penicillium, Cladosporium, Alternaria) in data set two, suggesting that their potential as radionuclide bioremediators may need to be evaluated further.

Be glad that you have enough to eat.

Hence, in determining whether a form should be ranked as a species or a variety, the opinion of naturalists having sound judgment and wide experience seems the only guide to follow.