Description: English: early morning light photo of bloom from Epiphyllum hookeri or Epiphyllum strictum. Date: 11 August 2009. Source: Own work by no1uno. Author: no1uno.
Description: Magyar: Epiphyllum hookeri ssp. guatemalense (Hylocereeae; Cactaceae; Planta) Nathaniel Lord Britton és Joseph Nelson Rose "The Cactaceae" c. könyvéből (Epiphyllum guatemalense néven). Date: 1923. Source: Britton N.L. & Rose J.N (1923): The Cactaceae, Vol IV, p. 195. Author: Nathaniel Lord Britton, Joseph Nelson Rose.
Description: English: Epiphyllum hookeri. Date: 1843. Source: Abbildung und Beschreibung blühender Cacteen, Band 1+ 2. Author: Dr. L. Pfeiffer & Fr. OttoPeter A. Mansfeld for the filtred image.