140 CLASSES AND ORDERS. 



10. Decandria, 10 stamens ; Rue, Pink, Hydrangea. 



11. Dodecandria, 12 to 19 stamens; Mignonette, etc. 



32. Icosandria, 20 or more, standing on the calyx. Rose, 

 etc. 



13. Polyandria, always 20 or more, on the receptacle ; But- 

 ter-cup, Larkspur, Peony, etc. 



14. Didynamia, 4 stamens, 2 of them uniformly the longest; 

 Fox-glove, Balm, Thyme, etc. 



15. Tetradynamia, 6 stamens, 4 of them uniformly the long- 

 est; Gilly-Flower, Honesty, Q,ueen's Rocket, etc. 



16. Monodelphia, stamens united by their filaments in one 

 set, anthers being separated ; Geraniums, Hibiscus, 

 etc. 



17. Diadelphia, stamens united by their filaments in two 

 sets ; Qowers papilionaceous, or butterfly-shaped. 



18. Polydelphia, stamens in two sets, united at the bottom 

 by the filaments ; Orange, St. John's Wort, etc. 



19. Syngensia, stamens 5, united by their anthers in one 

 set, flowers compound ; China-aster, Daisy, etc. 



20. Gynandria, stamens stand on the germ, style or stigma, 

 separate from the base of the calyx or corol ; Orchis, 

 etc. 



21. MoncEcia, stamens and pistils in separate flowers on the 

 same plant; Amaranth, Pine, Nettle, etc. 



22. DicEcia, stamens and pistils on separate plants ; Yew, 

 etc. 



23. Polygamia, stamens variously situated ; sometimes on 

 flowers with pistils, sometimes stamens only; Mim- 

 osa, etc. 



24. Cryptogamia, the flowers of this class are invisible to 

 the naked eye ; Lichen, Moss, etc. 



