Richthofenia siamensis Hosseus[3] Sapria himalayana, commonly known as the hermit's spittoon,[4] is a rare holoparasitic flowering plant related to Rafflesia found in the Eastern Himalayas.

[3][5] Sapria himalayana represents the extreme manifestation of the parasitic mode, being completely dependent on its host plant for water, nutrients and products of photosynthesis which it sucks through a specialised root system called haustoria.

In Vietnam, it is only known from the Lang Biang Plateau, where it has been recorded at Tuyền Lâm Lake, the Nam Ban Protection Forest, and the Cam Ly area.

[12] Recently, Sapria himalayana has also been spotted by one amateur researcher and Child specialist by profession Dr. Jayom Karlo in the hills of Perlek Modi (94⁰49′ 18″ E to 94⁰44′ 47″ E and 27⁰ 49′ 10″ N to 27⁰47′ 45″ N) of West Siang District, Arunachal Pradesh.

It has been suggested that flies pollinate it while seed dispersal may be by rodents,[14] but this has not been confirmed by direct observation.