See text Macrostelia is a genus in the tribe Hibisceae - in the family Malvaceae.
[1] The genus consists of three species: M. calyculata Hochr., M. involucrata Hochr., and M. laurina (Baill.)
Macrostelias - all native to Madagascar - distinguish themselves from most other genera in Hibisceae by typically bearing flowers with a long corolla tube.
[2] Although members of Hibiscus - an example of one of these other genera - may bear flowers with proximally connate petals, such connation occurs only at the very base of the petals.
In the past, Macrostelia was considered to consist of at least a total of four species.