Senyamok (Guioa pubescens) is a common flowering plant that can grow up to 25 m tall. The species epithet is derived from the Latin word, ‘pubescens’ meaning soft hairy, which refers to the hairy fruits. The greyish white or greyish brown to dark brown outer bark is smooth, sometimes deeply fissured, hard, greenish to flaky.  The leaves are spirally arranged, stalked and pinnate. The white hairy flowers are measured around 3.5-4.5 mm wide. The fresh hairy fruits turn from red to blackish when dry. It is distributed in Sumatra, Peninsular Malaysia (Melaka and Johor), Singapore, Bangka, West Java, Karimundjawa Island, Borneo and the Philippines (Palawan). In Peninsular Malaysia, this plant species commonly occurs in primary, secondary forests, kerangas, peat swamp forests, on the sand, sandy loam, sandstone, limestone, ultrabasic soil and dry peat, from sea level to 1,800 m a.s.l. (van Welzen, 2017).