A rare species that made it's entrance to the collectors market during 2007. It first arrived as Hoya lyi but it was soon discovered it had been misidentified. The species then changed names to Hoya sp. Square, somting that would indicate it being unidenfied but with a unique feature. In 2011 it was published as Hoya rotundiflora
Hoya rotundiflora has rather small leaves that are more or less rectangular. The leaves are slightly pubescent and quite hard.
Flowers are white, reflexed, and the corona is similar to that of Hoya siamica. The flowers in the photo were unfortunately not decorating my plant.
Should not be exposed to sunlight.. A shaded window facing west or east is good.
Tolerates some drought but should not be allowed to run completely dry.
Cool growing species. Tolerates longer periods of temperatures just below 10°C. Does not like to be exposed to temperatures above 25°C for any longer period.
Flower size: ca 10mm x 15mm
Leaf size: ca 20mm × 50mm