1、 Leaf difference

The leaves of longtuzhu are paper, narrow oval or oval oblong in shape, 4 to 10 cm long and 1.5 to 4 cm wide. The top gradually becomes sharp, the base is nearly round, the leaves are full-bodied, with small wart hairs on the surface, slightly rough, close to glabrous on the back, and the petiole is about 1 to 2 cm long

Red calyx dragon spits beads. The leaves are opposite, papery, with petioles, oval in shape, entire, the apex gradually becomes sharp, and the base is nearly round

2、 Flower difference

Cymes axillary or pseudoterminal, with bifurcated branches, about 7 to 15 cm long and about 10 to 17 cm wide. The involucral bracts are narrow lanceolate, the calyx is white, connate at the base, expanded in the middle, with 5 ridges, 5 deep lobes at the top, the lobes are triangular oval, the Corolla is dark red, and the lobes are oval

Red calyx dragon spits beads, cymes axillary or terminal, calyx red, corolla red