The neglected epiphyllum cactus in flower

I rather neglected this epiphyllum cactus. It now lives out in the garden cabin, which has very low heating in winter so never goes below 40 degrees F. Unfortunately in the last two years I haven't tended it very much. But as usual it has flowered profusely.

When I brought it out onto the patio table  a couple of days ago so that it could sit in the rain for a wash, I saw there was quite a number of these flowers. Sadly m ost of them were covered in a type of greenfly and weren't coming into full bloom. Having hosed them down I came back today and saw that a few of the flowers have fully developed. They are rather magnificent each being nearly six inches in diameter.