Prunus africana, is an evergreen tree native to the montane regions of sub-Saharan Africa and the islands of Madagascar, S?o Tom?, Bioko, and Grande Comore at about 900–3,400 m (3,000–10,000 ft) above sea level. The mature tree is 10–25 m (33–82 ft), open-branched, and often pendulous in forest, shorter and with a round crown of 10–20 m (30–70 ft) diameter in grassland. It requires a moist climate, 900–3,400 mm (35–130 in) annual rainfall, and is moderately frost-tolerant. Prunus africana is known by the common names African cherry, Pygeum, Iron wood, Red stinkwood, African plum, African prune and Bitter almond.