Tabernaemontana rotensis is a medium-sized tree, 8 to 10 m (26 to 33 ft) tall, in the Apocynaceae (dogbane) family. Thin, light green, opposite, elliptic-oblong leaves are 15 to 30 cm (5.9 to 11.8 in) long and 5 to 10 cm (2 to 4 in) wide. Sap is copious and milky. The inflorescence is an elongate,...