Hoya microphylla was discovered by the German botanist Rudolf Schlechter in Northeastern New Guinea, on trees in the forests of the Bismarck Mountains, 1100 m. 2 November 1908.

Hoya microphylla was discovered by the German botanist Rudolf Schlechter in Northeastern New Guinea, on trees in the forests of the Bismarck Mountains, 1100 m. 2 November 1908.