Pianggu Trees of the Myristicaceae (Nutmeg Family) produces male flowers on one individual and female flowers on another individual (dioecious). This Horsfieldia irya Tree at is a male Tree which would not fruit. Native. Critically endangered.One of the few remnant plants from former Gardens' Director, J.F. Sinclair’s Myristicaceae plot. This plot was used in his review of the family, published in Gardens Bulletin.The tree is a characteristic plant of freshwater swamp forest. Sinclair was an expert on Myristicaceae plants. Unique ID for Heritage Tree HT 2012-197 Location Found in Singapore Botanic Gardens, on Lawn XG Get Directions Heritage Tree Information Scientific name Horsfieldia irya Common name Pianggu Girth 2.68 m @ 1.3 m height Height 15.8 m