are native to northern Madagascar; Montagne dAmbre National Park.
Plaque culture for bicallosum has worked well for us and the plants seem
to enjoy life both on and off the mount itself. As with so many of its
relatives, bicallosum enjoys high humidity and more light than we have
seen recommended for the species. When mounting this species be careful
to cover the root system that has been protected from light and heat but
do not cover aerial roots that have developed without cover as they will
surely die. Once mounted with a modest coconut pad, correctly placed on
top of the root system we nestle the mounts into Spanish moss. The moss
keeps additional moisture available to the plants. This keeps the delicate
root system hydrated which is critical to the plants vigor.
NOTE: this photo was taken as the flower was fading and not at its best...my