A rione (Italian: [riˈoːne]; pl.: rioni) is a territorial subdivision equivalent to an urban neighborhood. The term originated from the administrative divisions of Rome, and is derived from the Latin word regio (pl.: regiones), meaning "region". All currently extant rioni are located in Municipio I of Rome.[1] The term has been adopted as a synonym of quartiere in the Italian comuni.[1]
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- ^ a b (in Italian) The word rione in the Treccani dictionary on-line
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction