Quang Ninh Province, Van Don District, Minh Chau Commune, Bai Tu Long National Park, Ba Mun protection sector|, Ba Mun Island, around point 21º04’33’’N 107º35’28’’E. Young secondary broad-leaved evergreen forest on rocky sandstone slope along seashore at 0–5 m a.s.l. Parasitic shrub with erect shoot to 1 m long in canopies of tall tree (Litsea). Flowers outside brownish-yellow, inside dark violet. Not common.
20 May 2025, Cuong Huu Nguyen, Ha Van Dang, Ly Van Nguyen, Nam Van Duong, Tuan Thanh Tran, Hai Xuan Cao, L. Averyanov, T. Maisak, AL4403 (NHC196).
Record creation: 2025-06-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01203355 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01203355