This variety of Epiphyllum (aka Orchid Cactus) is blooming now and the flowers look a lot like a Rat tail cactus (Disocactus flagelliformis) as shown below.

The hanging pot of Epiphyllum below will be blooming soon… and look at all those buds!
Two days later, these buds burst open in the pot next door… first big blooms of 2015.