Hoya macgillivrayi is a fast-growing vine native to northeastern Australia. It has oval pointed leaves and has a twining growth habit. The flowers of the plant are approximately 6 cm in diameter and vary slightly in size, shape, and color from each cultivar. They come in umbels of 6 to 10 flowers that are each connected at a central axis. Each flower is a dark burgundy color with five sepals and five petals. The stamen are enclosed in the corona. The fruit produced are two pairs of follicles that are 25 cm long from which a flat seed is produced that is distributed by the wind. The seed takes a long time to germinate.