Dypsis beentjei
Dypsis beentjei is an acaulescent flowering plant belonging to the family of palm trees, Arecaceae. Description 
It is a clustering acaulescent palm with subterranean and procumbent stems. Stem is 4 by 1.4 cm, a dull brown, with 2 mm diameter roots. Distribution 
It is endemic to Madagascar and only known from Antanambe forest at elevations of  above sea level. References 

beentjei
Endemic flora of Madagascar
Taxa named by John Dransfield
Plants described in 1995