Hoya patella is producing quite a few buds and blossoms in the way too hot grow room this year.  It sits to the back, and is very hard to water, and harder to get photos of, but the plant has at least six buds and blooms at this time.   It usually only grows this well in the summer greenhouse.  This plant does not require much light, but does need high humidity at all times to prosper.  From this morning:

Hoya patella Bud December 15, 2012