The Dujayl Canal was a medieval irrigation canal providing water to Baghdad. Originally it brought water from the Euphrates, but by the end of the 10th century its connection to that river had silted up, and a new connection was dug to the Tigris river.
Sources
[edit]- Le Strange, Guy (1905). The Lands of the Eastern Caliphate: Mesopotamia, Persia, and Central Asia, from the Moslem Conquest to the Time of Timur. New York: Barnes & Noble, Inc. OCLC 1044046., pp. 51, 65, 80, 85
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