FERTILIZATION. 181 
Fia. 167. — Iris. 
I, flower ; LI, seed, longitudinal section ; III, flower with limb of perianth 
removed ; stig, stigma, ov, ovary. 
E Fic. 168. — Iris. Til 
I, flower, longitudinal section, ov, ovary; IJ, diagram, showing stigmas 
opposite the stamens ; III, capsule, splitting between the partitions. 
