Classification of Plants 



373 



** All the Flowers Strap- shaped and Perfect. 



Tribe VI. Liguliflor^. — Styles long. Plants with milky 

 juice. 



Urospermum. — Heads many-flowered. Involucre in one 

 row. Pappus one-rowed and feathery. Receptacle bristly. 



II. III. 



Fig. 2>SA.—Printzia. I. Ray flower. II. The stigma, pushing out, 

 brushes the pollen from the stamens. III. The following day it draws back 

 and leaves the pollen in a ring at the top of the stamens. 



Achenes with long, sharp beaks, bladdery at base and rough 

 with sharp points. Herbs with stem-clasping leaves. 



Sonchus. — Heads many-flowered. Involucre in several 

 rows. Pappus soft, very white slender hairs. Achenes not 

 beaked. 



Common weeds with yellow flowers. Leaves with a wavy margin, 

 or pinnatisect. 



