Kottawa-Arachchi, J. Dananjaya, Friends of Horton Plains, Tea Research Institute of Sri Lanka, Talawakelle, Sri Lanka, Sri Lanka

• Lankesteriana: International Journal on Orchidology 2020: Lankesteriana: Volumen 20, Número 1 (Enero–Abril) - Artículos
  The endangered Daffodil Orchid Ipsea speciosa (Orchidaceae): Population status in unprotected areas in the Central Highlands, Sri Lanka
  Resumen  PDF (English)