P. cornutum (L. ) Gaertn. was landlord species in China,but their amount and distribution area of population reduced gradually.

• 该属植物作为一种沙生蔬菜,具有很大的开发潜力,但近年来资源逐渐减少,种群分布范围不断缩小,资源保护迫在眉睫。