Leaves leathery to papery, narrowly lanceolate or long-elliptic, 12-20 cm long, 3-5 cm wide, apex acute, base narrowed and auriculate;

• 叶革质或纸质，狭长披针形或长椭圆形，长12-20厘米，宽3-5厘米，顶端短尖，下部收狭，基部深心形或狭耳形；