This one was a surprise for me, it appeared in a bin one day, grown from spore.  It took about six years to reach a plant 9 inches or so across.  Thick undulate fronds, produces spore readily, birds-nest shaped and terrestrial.  It occurs in the Philippines and Borneo and is for some reason rarely seen in cultivation despite it being available through a few international sellers.

Available plants are well rooted in 2″ pots and will be shipped potted. They are offshoots from the plant that grew from seed.