The plants grows low on the ground, not tall.  Every part of plant has fragrance.  When you water them the smell comes stronger.  It likes bright sun and water a lot.   Grow faster at the cool place.   Blooms all year round.  Origin is Brazil.

You can grow from seeds, just in a few days leaves will come up.

I saw this at Petchabun province during my trip in February 2000.   Also found them at Suan Luang Park, Bangkok.

March 2000

I took couple of new pictures of Angelonia in March at Suan Luang Rama IX Park in Bangkok. 

The fragrance is something like that of chewing gum I think...

April 2000