THE ARTIFICIAL SYSTEM OF LINNAEUS. 513 



993. Their names are Greek derivatives, signifying in the former 

 that two stamens, and in the latter tliat four stamens, are most pow- 

 erful. — The four succeeding are founded on the connection of the 

 stamens: — 



16. MoNADELPHiA (meaning a single fraternity), with the 



filaments united in a single set, tube, or column, as in 

 all the Mallow Family, &c. 



17. DiADELPHiA (two fraternities), with the filaments united 



in two sets or parcels. 



18. PoLYADELPiiiA (many fraternities), with the filaments 



united in more than two sets or parcels. 



19. Syngenesia (from Greek words signifying to grow to- 



gether), with the anthers united in a ring or tube, as in 

 all Compositse (844). 



994. The next class, as its name aenotes, is founded on the union 

 of the stamens to the style : — 



20. Gynandeia, with the stamens and styles consolidated, as 



in the Orchis Family (Fig. 468). 



995. In the three following classes, the stamens and pistils are 

 found in separate blossoms : — 



21. Moncecia (one household) includes all plants where the 



stamens and pistils are' in separate flowers on the same 

 individual ; as in the Oak, &c. 



22. DicECiA (two households), where they occupy separate 



flowers on different individuals ; as in the Willow, Pop- 

 lar, Moonseed (Fig. 413, 414), &c. 



23. PoLYGAMiA, where the stamens and pistils are separat^^ 



in some flowers and united in others, either on the 

 same, or two or thi'ee diiferent plants ; as in most 

 Maples. 



996. The only remaining class, 



24. Cryptogamia, is inferred to have concealed stamens and 



pistils (as the name imports), or the analogues of these 

 organs, and includes the Ferns, Mosses, Lichens, &c., 

 which are now commonly termed Cryptogamous or Flow- 

 erless Plants (651). 



997. The characters of the classes may be presented at a single 

 view, as in the subjoined analysis : — 



