@Alocasia, I'm not so sure about Bauhinia purpurea (or any other species from this genus). To my knowledge, they don't have large trunks (MirandaPn said 'Bottle trunks'). The stamens don't really match, also.
I'd say Chorisia speciosa. I think the flowers match. However, the trunk is covered with short and thick spines. I'm surprised MirandaPn didn't mention this. Do you recognise the trunk ?


Link :
images on Google.com[ Edited by gingerSt on 2010/1/23 17:05 ]