Found in northern Vietnam in coniferous, mixed, broad-leaved and evergreen closed forests in mosses and leaf litter on limestone and north facing limestone cliffs at elevations of 700 to 950 meters asa natural hybrid between P. helenae and P. hirsutissimum var. esquirolei and is a small to medium sized, warm growing epipyte that blooms in the late summer and fall on an erect, arcuate to 6.8" [17 cm] long, single flowered inflorescence.

Synonyms

References W3 Tropicos, Kew Monocot list , IPNI ; Oasis Vol 1 No 2 2000 photo; Lindleyana Vol 15 No 4 2000; AOS Bulletin Vol 73 No 4 2004; AOS Bulletin Vol 76 No 3 2007 photo fide; Orchids of Vietnam, Illustrated survey, part 1 Averyanov 2008; Orchid Digest Vol 74 #3 2010 photo/drawing fide; Orchid Digest Vol 76 #4 2012 photo fide; AOS Bulletin Vol 89 #1 2020 photo fide

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