20 



CLASSES OF LINN^US. 



Number of Stamens, and tneir 

 position, relative to the Calyx and 

 Receptacle. 



Fig. 7. 



11. ICOS-ANDRIA,* 



(Eikosi.) 20 



12. POLY-ANDRIA, 



(Polus.) many. 



Over ten Stamens inserted on 

 the Calyx. 



Over ten Stamens inserted on 

 the Receptacle. 



Tlie 13tli and 14tli classes are named by prefixing Greek nu- 

 merals to Dynamia, which signifies power or length. 



Number and relative length 

 of Stamens. 



Fig. 8. 



Two Stamens longer or more 

 powerful than the other two. 



Four Stamens longer or more 

 powerful than the other two. 



The 15th and 16th classes are named by prefixing Greek nu- 

 inerals to the word adelphia, which signifies hrotJierliood. 



Stamens united by their filaments in one sit 

 or brotherhood. 



Two brotherhoods. 



Connection of Sta- 

 mens either by fila- ■{ 

 ments or anthers. 



15. MON-ADELPHIA, . 



16. DiA-DELPHIA, 



The 17th class is named by prefixing Syn, sig- 

 nifying together^ to Genesia, which signifies grow- 

 ing tcjj. 



, 17. Syn-genesia, Five united anthers, flowers compound (in a head). 



Fig. 9. 



The 18th class is named by an abbreviation of the word 

 GYNiA, which signifies pistil, prefixed to andkia, showing that 

 the stamens and pistils are united. 



18. Gyn-andria, 



Stamens growing out of the Pistil. 



19. MON-(ECIA, 



20. Dl-(ECIA, 



The 19th and 20th classes are named by pre- 

 position r,f Stamens I fixinff uumerals to cecia, which signifies a house. 



relative to the PisUl. ^ ^ 70 



( Stamens and Pistils on separate corollas upon the 

 ( same plant, or in one household. 

 \ Stamens and Pistils in separate corollas upon 

 l^-u. iTi-ituiA, I different plants, or in two households. 



* The name of this class does not now designate its character, since the number of stamens is often 

 more or less than twenty. 



Classes which depend on the number of stamens — number and position — number and relative 

 length — What classes depend on the convection of the stamens? — Explain the signification of their 

 uames— What classes depend on the •position of tiie stamens? — What does Gynandria sigiiifj ? — 

 Mon ccia ? — DicGcia ? 



