Easter or Spring Cactus

Easter or Spring Cactus (Rhipsalidopsis gaertneri)

When the 'invasion' happened in January we moved 'stuff' around in the house and this Cactus was moved (stuffed) into the lobby area. 

In the past we have had one or two flowers at a time but this plant does seem to like the lobby are. North Facing, cool temperature and light through frosted glass.