Ruellia species- Sariska Tiger Reserve

Plant from Sariska - NSD 35 : 7 posts by 5 authors. Attachments (1)
This herb is from Sariska Tiger Reserve
Photo taken on 26-7-09
I think this is from convolvulaceae family
Please id this plant
... the flower texture (vague reasoning) reminds me of Ruellia related species.
Thanks ... for taking lead, can it be Ruellia humilis Nutt.?
This is a Acanthaceae member...Please see in Dipteracanthus Genus....
also check Dipteracanthus suffruticosus if it matches.
Pl. also check images at Ruellia patula Jacq.