Heaberht was a king of Kent in the 8th century, ruling jointly with Ecgberht II.
Heaberht is known from his coins and from charters of other kings. He witnessed or confirmed two charters of Ecgberht II [1][2], one dated 765, as is mentioned in a charter of Offa, King of Mercia [3], dated 764 (atque Heaberhti regis Cantiae).
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