The term Danubian culture was coined by the Australian archaeologist Vere Gordon Childe to describe the first agrarian society in Central Europe and Eastern Europe. It covers the Linear Pottery culture (Linearbandkeramik, LBK), stroked pottery and Rössen cultures.
The beginning of the Linear Pottery culture dates to around 5500 BC. It appears to have spread westwards along the valley of the river Danube and interacted with the cultures of Atlantic Europe when they reached the Paris Basin.
Danubian I peoples cleared forests and cultivated fertile loess soils from the Balkans to the Low Countries and the Paris Basin. They made LBK pottery and kept domesticated cows, pigs, dogs, sheep, and goats. The characteristic tool of the culture is the shoe-last celt, a kind of long thin stone adze which was used to fell trees and sometimes as a weapon, evidenced by the skulls found at Talheim, Neckar in Germany and Schletz in Austria. Settlements consisted of longhouses. According to a theory by Eduard Sangmeister, these settlements were abandoned, possibly as fertile land was exhausted, and then reoccupied perhaps when the land had lain fallow for long enough. In contrast, Peter Modderman and Jens Lüning believe the settlements were constantly inhabited, with individual families using specific plots (Hofplätze). They also imported spondylus shells from the Mediterranean.
A second wave of the culture, which used painted pottery with Asiatic influences, superseded the first phase starting around 4500 BC. This was followed by a third wave which used stroke-ornamented ware.
Danubian sites include those at Bylany in Bohemia and Köln-Lindenthal in Germany.
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