This form of the species is from the Smithsonian Institution, USBRG 96-163, and has been in cultivation for many years.
Additional photos can be seen in a slideshow by clicking one of the links below.
This is the collection of this species which has been in cultivation for many years. Note the characteristic dark foliage and the small-lobed flowers. A different collection, from Ecuador, can be seen here and here. Other photos of the plant can be seen here and here.