Template:Pupulin, Karremans & Gravendeel, 2012
- Pupulin, F., Karremans, A.P. & Gravendeel, B. 2012. A reconsideration of the empusellous species of Specklinia (Orchidaceae: Pleurothallidinae) in Costa Rica. Phytotaxa 63: 1–20. DOI: 10.11646/phytotaxa.63.1.1
