B. subhowii A–I B. psilophylla J–L B. cucurbitifolia M, N showing similar features comparable to B. parvibracteata A habitat B young leaf blade (adaxial) C leaf blade (abaxial) D inflorescence E bracts F, G front and back views of staminate flower H front view of pistillate flower with 5 tepals I lateral view of pistillate flower J flowering plant K symmetric leaf blade L front view of flower M leaf blade of juvenile plant N mature leaf blade (Photos A–I by R.K. Li J–L by Z.X. Liu M, N by D.K. Tian).