WATER-PLANTAIN TRIBE. 



633 



flowers, which are solitary, are white, with a yellow 

 spot. 



2. ACTINOCARPUS (Star-fruit]. 



1. A. Damasonium (Common Star-fruit). The only 

 British species. Ditches in the midland counties, not 

 common. An aquatic plant, with the habit of a Water- 

 Plantain. The leaves grow on long stalks and float on 

 the surface of the water ; the flowers, which grow in 

 whorls, are white, with a yellow spot at the base of each 

 petal ; the fruit is composed of 6 pointed carpels, whicl} 

 are arranged in the form of a star. Fl. June, July. 

 Perennial. 



SAGITTARIA SAGITTIFOLIA (COWI/TOOU 



3. SAGITTARIA (Arrow-head). 



1. S. sagittifoUa (Common Arrow-head). The only 

 British species. Kivers and ditches, not unfrequent. 



