Bulbophyllum macranthum Lindley 1844, first blooming in my garden

I brought this plant at the 2017 Puerto Rico Orchid society show.  I liked the plant because it was large and had many growths.  It is growing on a plank of wood.  When the rainy season started I began watering it every day, if it had not rained that day.  To my delight, it started producing new leads.  At the moment it has six new growths that are on their way to grow larger and huskier than the previous growths.  It has a single flower and two buds.  In the species the flower is non resupinating, so it is upside down.