CLASSIFICATION OF ANGIOSrERMS. 46; 



Fig. 253. Arrow-head {Sagittaria latifolia), a common marsh or aquatic plant and 

 very widely distributed. The leaves are variable, but almost always sapittate. It produces 

 naked scapes which are sheathed by the bases of the petioles; the white flowers arc producfd 

 all summer. — After Troth. 



30 



