山羊百科，林文智老師的植物、山岳、攝影紀錄

Part I

Part II

• Ames, Bibl. Enum. Bornean Pl. (Merrill) 102 1921；https://www.biodiversitylibrary.org/page/11382259#page/106/mode/1up

Part III

1. Wong, Sin Yeng and Peter C. Boyce 2010 Studies on Schismatoglottideae (Araceae) of Borneo XI: Ooia, a new genus and a new generic delimitation of Piptospatha. Bot. Stud. 51: 543-552