H. sp. Thailand (AP1116)
(Physostelma sp.)
Betong, Yala province, southern Thailand.
Related species: H. wongii
The first bloom was on the night of June 4, 2010. The flower is large (3.50cm) and does not match to the type sheet of H. wrayi - wray 371.
This unknown is very difficult to cultivate. It is a true lowland species. The single flower blooms at night and lasts only one night.
