Gliricidia sepium ?

I need some help clarifying the identity of this ‘kind’ of Gliricidia sepium – In the Valparai plateau (Southern Western Ghats), locals recognize two kinds of Gliricidia sepium – one has pink flowers, is shrubby and has strong wood (used for pepper posts, fencing etc – seen commonly) while the other has dark purple flowers, is a small tree and its wood is less strong (locally called Avari). I’m not convinced that Avari = gliricidia sepium itself – can someone throw more light on this, if this ‘Avari’ a different variety/sub-species/species?

Pardon me if this question has come up already on the group, couldn’t find a lot of information on this on this group or elsewhere.