Acorus americanus
 
Sweet Flag

Fertile Leaf, Cross Sections at Multiple Points

3.1 Miles North of Highway #3 on Silica Sands Road, East of Hudson Bay
08-August-2017

The leaf smoothly transitions from being 2-facial (having top/adaxial and bottom/abaxial sides) proximally to being 1-facial (having left and right sides) distally.