1、 Leaf difference

The leaves are hard paper, oval lanceolate or lanceolate in shape. The top of the leaves is long and gradually sharp, and the base is blunt or round. It is about 8 to 15 cm long and 2.5 to 5 cm wide. The leaves are entire

Its leaves are opposite, leathery, elliptic or obovate, 3 to 8 cm long and about 1 to 4 cm wide. The apex of the leaves is round or blunt, and the base is broad wedge-shaped

2、 Flower difference

The corymbose is terminal. The bracts of flowers are halberd shaped, membranous, sharp at the top. The pedicel is about 5 mm long. The calyx tube is 1 to 2 cm long and 1 to 2 cm in diameter. There are 5 lobes. The petals are pink or purplish red. Usually 5 petals are widely obovate

Its flowers have long stems and are usually solitary, purplish red. The flowers are 2 to 4 cm in diameter and have five petals, which are obovate