Pteroceras semiteretifolia

The white pigeon orchid, also known as the white pigeon orchid, has a hard stem, 2-10 cm long, 4-5 mm thick, with several bi-rowed leaves. The leaves are thin and leathery, nearly oblong. There are 2-6 racemes, unbranched, with several to more than 10 flowers; the flowers are slightly fleshy, spreading, the sepals and petals are white with purple-brown spots; the petals are oblong, 4 mm long, 1.5 mm wide, apex Blunt; the labial valve is milky white, connected to the end of the stamen foot with a movable joint.
It grows on forest edges and on tree trunks in mountainous sparse forests at an altitude of 950-1300 meters. Distributed in southern Yunnan, China, Myanmar, Thailand, Vietnam, and the Philippines.