The Sint-Jansbeek (Dutch pronunciation: [sɪɲˈcɑnzbeːk]) is a stream in Arnhem, which streams down from the hills of Zijpendaal through the Sonsbeek park and the inner city of Arnhem to the river Rhine. The Sint-Jansbeek has always been an open stream, but the part in the inner city is covered since the city moats were filled in the 19th century. The stream from the source in Zijpendaal through the park Sonsbeek is still open.
51°59′54″N 5°53′42″E / 51.99833°N 5.89500°E
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