Kalanchoe
This kalanchoe is commonly grown around here in Singapore and Malaysia. It can flower well under our equatorial, aseasonal conditions. I've no idea where this kalanchoe originates. Could it be a K. blossflediana hybrid introduced long ago? Or it is a introduced Indian kalanchoe (of which K. heterophylla is a possibility)? Other asiatic (Indian) candidates like K. spathulata or K. grandiflora also have yellow erect flowers. E-mail me.