It is a smaller plant, less than 1 meter tall, with smaller leaves (3-6 cm long), and smaller inflorescences with only 1-8 flowers.
They are papery, ovate to broadly ovate, occasionally narrowly elliptic, 9-18 cm long, gradually pointed at the tip, heart-shaped or rounded at the base, with irregularly blunt or rounded teeth along the edges.
4-6月
The umbel inflorescence blooms simultaneously with the leaves, 5-15 cm in diameter, without large sterile flowers. It has reddish-brown glands on the calyx tube, with 5-7 primary rays bearing flowers on the second to third order branches.