Primary meristem of Cynomorium songaricum Rupr. is composed of protoderm, ground meristem and procambium strands that line a wavelike ring in the ground meristem.

• 摘要锁阳茎的初生分生组织由原表皮、基本分生组织以及在基本分生组织中呈波浪式环状排列的原形成层束组成。