266 ENGLISH WILD FLOWERS. 



perianth or none. No plant of this order has both 

 calyx and corolla, as the catkin of the willow or cone 

 of the pine. It includes sixteen families, subdivided 

 into 1, Herbs and small shrubs ; 2, Trees principally 

 which are easily distinguished. 



1. The Amaranth family .... AmarantJiacece. 



2. The Goosefoot family .... Chenopodiaceas. 



3. The Knawel family .... Scleranthacece. 



4. The Knotgrass and Sorrel family Polygonacece. 



5. The Sandal family Santalacece. 



6. The Sallow-thorn family . . . ElceagnaceaB. 



7. The Mezereon family .... Thymelacece. 



8. The Birthwort family .... Aristolochiacece. 



9. The Crowberry family .... Empetracea. 



10. The Spurge family EuphorUaceae. 



11. The Water Starwort family . . CallitricTiaceae. 



12. The Hornwort family .... CeratophyllaceoB, 



13. The Nettle family Urticacece. 



The other families consist principally of trees. 



14. The Elm family Vlmaceee. 



15. The Amentaceous families . . AmentaceoB. 

 These include The Gall or Myrtle family, Myrica- 



ceae; the Birch family, Betulacees; the "Willow family, 

 Salicacece; and the Cupbearing family, Cupuliferoe. 



16. The Conebearing family . . . Coniferce. 



5. Monocotyledons or Endogenae. This class has 

 seeds with a single lobe, and is divided into two sub- 



