Well there is no Epiphyllum 'Miami Red', There is a however an Epiphyllum 'Miami' which is red in colour, if that makes sense?
'Miami’ - TMM 1941 Red-violet. {S} Reg. #08254
A very nice lady on facebook pointed out that it's likely a mistake where someone has written the cultivar and then the colour down and somehow they've incorrectly come together.
hope that helps
- Epiguy