Medium sized terrestrial, epilith or epiphyte. Leaves 6 or 7, strap-like, to 30 cm long, to 4.5 cm wide, dull green. Flowers 2?12, to 16 cm wide; spring. Dorsal sepal obovate, larger than laterals, whitish, purple-veined, base green or yellowish with brownish spots. Petals spoon-shaped, narrower and longer than dorsal sepal, yellow-green with brownish blotches in lower half, purplish in upper half. Labellum helmet-shaped, greenish with brown veins.
Philippines.
P. lowii (Lindl.) Stein from Malaysia and Sulawesi is a medium sized epiphyte or epilith with green leaves, 3?7 flowers with the dorsal sepal mostly green, purplish at base, petals that are spoon-shaped, twisted, green with maroon spots at base and purple tip, and a brownish, helmet-shaped labellum.
Source: (2005). Orchidaceae. In: . Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.