The Battle of Polvoraria took place in 878 between troops of the Kingdom of Asturias under Alfonso III of Asturias and a Muslim army of the Emirate of Córdoba under Emir Muhammad I of Córdoba. It occurred near the confluence of the Orbigo and Esla rivers and was an Asturian victory.
Bibliography
[edit]- (in Spanish) Sánchez-Albornoz, Claudio (1932). «La batalla de Polvoraria». Anales de la Universidad de Madrid I: 225–238.
41°57′58″N 5°40′56″W / 41.9661°N 5.6822°W
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