I'd like to see more of the plant. Can you post other images to show the stems and leaves and the entire plant ?

Here is a photo of the leaf. The plant is an upright shrub with bullate (quilted) leaves much like some Stachytarpheta species. I'm positive it's a Bouchea now but can't seem to figure out the species. Two people said they collected it in Costa Rica and a review of the flora of Costa Rica only shows Bouchea prismatica, which is supposed to be an annual.

Can't be sure but this matches color.

Here is a link that might be useful: http://www.ufrgs.br/fitoecologia/florars/open_sp.php?img=7521