Isenburg-Birstein was the name of two German historical states centred on Birstein in southeastern Hesse, Germany. The first "Isenburg-Birstein" was a County and was created as a partition of Isenburg-Büdingen-Birstein in 1628. It was merged into Isenburg-Offenbach in 1664. The second "Isenburg-Birstein" was a Principality, created as a partition of Isenburg-Offenbach in 1711. It was renamed the "Principality of Isenburg" in 1806.
Counts and Princes of Isenburg-Birstein
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1 Part of the Three Bishoprics. 2 Nomeny after 1737. 3 without Reichstag seat. 4 until 1736. 5 Joined Swiss Confederacy in 1515. Circles est. 1500: Bavarian, Swabian, Upper Rhenish, Lower Rhenish–Westphalian, Franconian, (Lower) Saxon Circles est. 1512: Austrian, Burgundian, Upper Saxon, Electoral Rhenish · Unencircled territories | |||||
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