Bruce It reminds me a bit of this one. This is sargentianum x pearcei. Your petals are longer. I would guess the coloration of both of ours come from sargentianum. I would guess that yours might be Phrag. Red Lightning (Phrag. sargentianum x Phrag. popowii). There is a possibility that it is a sorcerer's apprentice ( sargentianum x longifolium) cross.