246 coMP6snvE 



3. Knaijtia (Field Scabious). — Perennial herbs, nearly related 

 to Scabiosa ; but distinguished by the hemispherical hairy common 

 receptacle; the 4-angled involucel ; and the 8 — 16 deciduous 

 bristles of the calyx. (Named in honour of Christian Knaut, a 

 Saxon botanist.) 



1. K. arvensis (Field Scabious). — A tall, bristly plant, 2 — 3 feet 

 high, not much branched ; radical leaves simple ; cauline ones 

 pinnatifid; heads large, convex; flowers handsome, lilac, with 



kna6tia arv£nsis {Field Scabious). 



4-lobed corollas, the inner ones nearly symmetrical, the outer 

 larger and bilabiate. — Cornfields and waysides ; common. — Fl. 

 July — September. Perennial. 



Ord. XL! Comp6siive. — The Composite Family 



This is by far the largest of all the Natural Orders, containing 

 as it does nearly 10,000 species, in 800 genera, or about one-tenth 

 of all known Flowering Plants. These figures serve to illustrate 



