312 THE STORY OF PLANT LIFE 



The achenes have two to four bristles, the fruit 

 being narrow to inversely ovoid, the ribs and bristles 

 barbed and wedge-shaped. 



The flowers bloom from July to October. The 

 plant is a herbaceous annual, and may reach a 

 height of 2 ft. 



The ray florets may be absent, and if present they 

 have either stamens or pistil, not both. The tubular 

 florets are bisexual. The anther-cells are simple. 

 The style arms are tipped with papillose cones. 

 The flowers contain honey and are insect-pollinated. 



The barbed fruits are liable to catch in the wool of 

 animals which are in the habit of coming dow^n to 

 the waterside to drink. 



This plant is also called Water Agrimony, Baclin, 

 Double tooth. 



The second name is used in Hampshire according 

 to Pulteney, an old Leicestershire botanist. 



BiDENS CERNUA. — III Fig. 69 the whole plant is 

 shown with nodding flower-heads and opposite entire 

 leaves with serrated margin. The details show the root, 

 rootlets, and stem base, a dwarf plant {two to three 

 inches high) in flower, and a floret with anthers cxserted 

 forming a tube. 



42. The Harebell Group (Summary). 



{bitrodiiciory Voltnne, p. 14S.) 



In the Harebell Group, or the order Campanulacese, 

 embracing also the order Lobeliaceae, are included 



