Here is a photo that I just took of a much stronger set of blooms from elliptica than I posted a few days ago.  This plant is a blooming machine.  In the year and three quarters that I have owned the plant it has produced hundreds of flowers.  There are currently five peduncles on the plant in various stages of bud development.  Despite its reputation as a difficult plant, I have found it to be one of the easiest to grow, and it blooms almost continually.  I believe the biggest key to success with Hoya elliptica is high humidity.