LIXNJ3AX SYSTEM. 401 



The three next classes are characterised by the connection of 

 the stamens into one or more bundles. Their names are derived 

 from the combination of the G-reek numeral expressing the 

 number of bundles, with the termination adelphia or brother- 

 hood, which is used metaphorically for a bundle ; thus : — 



Class 16. Monadelphia, includes all plants the stamens of which 

 are united by their filaments into one bundle or 

 brotherhood, as in the plants of the Mallow Order 

 {fig. 535) and Geranium. 



Class 17. Biadelphia, those with the filaments imited into two 

 bundles or brotherhoods, as in the Pea {fig. 538) and 

 many other Papilionaceous flowers, and Fumitory. 



Class 1 8. FoJy adelphia, those with the stamens united into more 

 than two bundles or brotherhoods, as in the St. 

 John's-wort, Castor Oil Plant, and Orange. {Figs. 

 539 and 540.) 



In the next class the character is derived from the coherence 

 of the anthers, and the name is derived from two Greek words, 

 signifying to grow together; thus: — 



Class 19. Si/figc7iesia, includes all plants the flowers of which 

 have their anthers united into a tube or ring, the 

 filaments being distinct, as in all Composite Plants. 

 (Fig. 534.) 



The character of the next class is founded on the union of the 

 andrcecium to the pistil. 



Class 20. Gyjiandria. This includes all plants in which the 

 andrcecium and gynceciura are united together into 

 one column, as in the Orchis Order. {Fig. 532.) 

 The name of this class is derived from two Greek words, one 



of which gynia, in combination gyn, is used metaphorically for 



pistil, and the other, andria, as already mentioned, means male 



or stamen. 



In the preceding twenty classes the flowers all contain both 

 an andrcecium and a gynoecium or pistil. In the three following 

 classes the andrcecium and pistil are in separate flowers, either 

 on the same plant, or on two or more different plants of the 

 same species ; thus : — 



Class 21. Moncecia, includes plants where the andrcecium and 

 pistil are in separate flowers, but on the saine indi- 

 vidual, as in the Euphorbia, Oak, and Arum. {Figs. 

 377 and 537.) The name is derived from the Greek, 

 and signifies one hotisekold. 



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