This is very informative.
After some more readings, I agree sanguinea x ramispina is a closer fit.
Hosh, the color of peristome is different. Probably it is variation among sanguinea x ramispina.
I read from other forum that sanguinea has single spur as the plant matures. While the trait of branched spur is inherited from ramispina. I am wondering the reliability of using this characteristic to distinguish the two. At least to rule it out from pure sanguinea. If so, probably I should see how it progresses and update half a year later.
Thanks.