palisade-parenchyma

“(In the majority of dicotyledons the upper surface of the leaves is nearly or quite destitute of breathing pores, and the cells of the ground tissue below the upper epidermis are closely packed, forming what is called the "palisade-parenchyma" of the leaf.) [Illustration: FIG.”

Elements of Structural and Systematic Botany For High Schools and Elementary College Courses