This is a shallow 1 gallon bowl housing various unidentified Bucephalandra. The substrate is a thin layer of turface, with some lava rock and wood as a growing surface for the plants. It gets medium light and has nearly no ventilation. I believe some of these are ‘brownie’ type Buces.
An Aridarium species pictured below, which has grown considerably in the past few months. It enjoys the same conditions as the other plants, with wet feet and room to grow its root structure in a wood crevice.
This stunning Homalomena I’m babysitting for a friend, and originally mistook it for a Buce. The leaves taper off towards the tips, unlike Bucephalandra.