Rosenbergiodendron formosum

Panama to Venezuela and Ecuador as per WCSP;

Dattaji Salvi Udyan  Thane
Date: May 1, 2018 ... Altitude: about 11 m (36 feet) asl
Rosenbergiodendron formosum  (Jacq.) Fagerl.
... synonyms: Gardenia mussaenda L.f. • Mussaenda formosa Jacq. • Randia formosa (Jacq.) K.Schum. • Randia mussaenda (L.f.) DC. ... and many more at The Plants List (2013). Version 1.1.

I think a new addition to efi site. One link is below:

Its synonym Randia formosa (Jacq.) K.Schum. is also a popular name among gardening sites.

i know it as Gardenia mussaenda

Yes, Gardenia mussaenda L.f. one of its synonyms, is also a popular name.