This is a Psilotum cross between P. nudum and P. complanatum. From Hawaii: Propagation from plants grown at the Matthei Botanical Garden at the University of Michigan brought there by the late Dr. Warren Herb Wagner who described the hybrid.
The stems of this cultivar are flat/pendulum like complanatum and upright like nudum. This make a nice specimen plant... The sporangia are formed on the tips of the stems.