The type specimens of this species are from Long-ki in bamboo thickets and from Tchen-fong-chan on shady rocks, but both locations are in the extreme North-North East part of Yunnan. This species has the typical efarinose and papery-leathery leaves of this small Section. Flowers are rose, leaves ovate with long narrow petioles. This species is distinguished from P. lacerata and P. veitchiana by having emarginate corolla lobes rather than fimbriate lobes. See related species P. lacerata, P. veichiana, P. petelotii and fenghwaiana.