The leaves are opposite or in whorls of three or four , 5-50 centimetres ( 2.0-19 .7 in ) long and 3-25 centimetres ( 1.2-9 .8 in ) broad , dark green and glossy with a leathery texture .
The leaves are opposite or in whorls of three or four , 5-50 cm long and 3-25 cm broad , dark green and glossy with a leathery texture .