1、 Blade difference

The flower is short and hairless. The leaves at the base are oblong, the upper leaves are divided into 3 parts, the middle lobe is oblong, and the shape of the lateral lobe is triangular. The morning glory is completely different. Its stem has pubescent and long hard hair, which can be clearly distinguished from this point. The leaf shape is also completely different. Its leaves are oval or nearly round, and the leaf surface is also pilose

2、 The difference between flowers

The flower is axillary, and the pedicel is usually longer than the petiole. Bracts are broadly ovate and sepals are oblong. Its corolla is light red or lavender, and its shape is bell shaped. Unlike morning glory, its pedicels vary in length, but most are shorter than petioles. Bracts are also relatively long and linear. Sepals are lanceolate linear. Its corolla is funnel-shaped, and its color is purplish red or blue purple. The color of corolla tube is relatively light

3、 Capsule difference

The capsule is ovoid in shape, similar in length to sepals, or sometimes slightly shorter. Its seed color is and brown, with small warts on the surface. The capsule of morning glory is nearly spherical, and the seeds are dark brown and beige