110 PHARMACEUTICAL BOTANY 
Pores (continued) 
Elliptical. Somewhat elongated pores with rounded ends. 
Oblique. Slit-like pores in a slanting position in the cell wall. 
Simple. Unbranched or non-bordered pores. 
Slit-like. Very narrow, elongated pores. 
Transverse. Slit-like pores extending in a direction perpen- 
dicular to the lateral cell walls. 
