Knema lenta[1] [2] is a small tree species in the genus Knema, of the family Myristicaceae. It may be a synonym of Knema glauca (Bl.) Warb.[3] and is called: 狭叶红光树 xia ye hong guang shu in Chinese and máu chó thấu kính in Vietnamese.
The tree grows up to 20m (70feet) tall, in tropical forest areas up to 1200m (3,900feet) in elevation, in Bangladesh, China (Yunnan), India (including Andaman Islands), Myanmar, Thailand and Vietnam.[4]