This specimen is a hybrid between Anthurium Crystallinum "Chocolate" and a NOID cultivar from Doc Block, possibly "Michelle" or "Zara". This specimen has stiff petioles, rounded leaves, and compact growth.
This hardy Anthurium Crystallinum "Dark" hybrid appears to have darker-than-usual foliage and is bound to be an easy-to-grow specimen because of its Crystallinum parentage.