is santan flower or ixora coccinea staminate or pistillate?

Answer 1

I'm not 100% certain here, but I'm thinking they are both male (stamens)and female (pistil) in the same flower. Staminate and pistillate mean there are separate male and female flowers either on the same plant, making it a monoecious, or on two separate plants (such as holly) making that species dioecious.

Tear open a flower and look down in the tube for both the stamens and the pistil.