Epiphyllum species

• Princess / Queen of the night / Night lotus
• Cactus orquídea / Reina de la noche
• 月下美人
• Dama-da-Noite
• 曇花一現
• Belle de nuit / Fleur de lune

Scientific classification
Kingdom:Plantae
Clade:Tracheophytes
Clade:Angiosperms
Clade:Eudicots
Order:Caryophyllales
Family:Cactaceae
Subfamily:Cactoideae
Genus:Epiphyllum

From my collection

via Flickr https://flic.kr/p/2isUj3S