ROSE FLOWERS 55 



high and generally somewhat prostrate: the leaves are fairly 

 large, lance-shaped, provided with a fringed sheath, smooth, 



110. Centaury. 111. Bindweed. 



dark green, and often spotted with dark brownish purple : the 

 flowers are arranged in close spikes, in the leaf axils and at the 



112. Knot-Grass. 113. Spotted Persicaria. 



apex of the stem ; they are pale rose-coloured, appearing in 

 summer and autumn. 



114. Amphibious Persicaria, Polygonum amphibium, Dock 

 family. This plant is an inhabitant of ponds and ditches, and 



