Nauclea officinalis (Pierre ex Pitard) Merr. & Chun., Sunyatsenia 5 (1940)

Latin for 'office or work space', usually referring to place where medicinal plants are sold, i.e. medicinal plants.

Nauclea brunnea Craib
Nauclea officinalis (Pierre ex Pit.) N.N. Tran
Sarcocephalus officinalis Pierre ex Pitard

Mid-canopy tree up to 33 m tall and 67 cm dbh. Stipules ca. 10 mm long, rounded tip. Leaves opposite, simple, penni-veined, glabrous. Flowers ca. 3 mm diameter, yellowish, with corolla tube, flowers placed in globose flower heads. Fruits ca. 16 mm diameter, green-yellow-brownish, fused into fruiting body.

In undisturbed mixed dipterocarp and keranga forests up to 600 m altitude. On hillsides and ridges with sandy to clay soils. In secondary forests usually present as a pre-disturbance remnant.

The wood is used for general construction, carving and furniture.

Southern China, Indo-China, Thailand, Peninsular Malaysia, Sumatra, Borneo (Sarawak, Sabah, Central- and East-Kalimantan).

Local names
Borneo: Babangka, Bangkal, Bangkal darat, Bengkal, Garam pajau, Kambalu, Katung.