Class XIX. Order IV. 181 



compressed, emarginate, with two unarmed awns ; 

 calyx double, each many leaved. 



Order IV. NECESSABM. Florets of the centre 



with stamens and pistils, barren; those of the ray with pistils 

 only, fertile. 



240. IVA. Receptacle hairy ; seeds naked, 

 obtuse ; down none ; calyx three leaved ; florets of 

 the ray five. 



