Mother of Thousands

Hello! My name is Laura, and I am a researcher at the Institute of Botany, Spain. We are studying the hybrid Kalanchoe houghtonii (or Bryophyllum houghtonii). The plant from the pictures is Kalanchoe houghtonii, not K. daigremontiana. It would be very useful to know if whether the observed individual is cultivated or, on the contrary, survive by its own (that is, escaped from cultivation). Also the year in which the pictures were taken would be appreciated. Thank you very much in advance, Laura