What is "aarabia"

Aarabia is a genus of extinct vascular plants found in central Morocco in outcrops of Early Devonian age (Emsian, around ). The leafless plant has a complex branching system with a main stem and at least three orders of side branches. In addition to these long branches, stems bore very short branches, which typically branched once into two curved sections. Spore-forming organs or sporangia were borne singly on reduced lateral branches in groups of at least three. The genus is thought to be related to the euphyllophytes – modern ferns and seed plants.