LINNEAN CLASSES. 37 



Class II, DiANDRiA (<5t?, twice), with two stamens to each 

 flower. 



III, Triandria {rgig, tlirice), with tliree stamens. 



IV, Tetrandria (rexQu, four times), with fom- stamens. 

 V, Pentandria (ttevts, five), with five stamens. 



VI, Hexandria (e's, six), with six stamens. 

 VII, Heptandria (ema, seven), with seven stamens. 

 VIII, OcTANDRiA (oxTw, eight), with eight stamens. 

 IX, Enneandria (evvect, nine), with nine stamens. 

 X, Decandria (dsHu, ten), with ten stamens. 

 XI, DoDECANDRiA (Swdexa, twclve), with twelve stamens. 

 2d. Position. The next two classes depend upon the posi- 

 tion of the stamens, — the stamens being free and equal. 



XII, IcosANDRiA (eixoai, twenty), includes those genera 

 of plants wluch have twenty or more stamens to 

 the flower, seated on the calyx (perigynous). 



XIII, PoLYANDRiA {noXvg, many), twenty or more stamens, 



seated on the receptacle (hypogynous). 

 3d. Relative length. The two following classes are founded 

 upon the relative length of the stamens, together with their 

 number. 



XIV, DiDYNAMiA (Sig, twice, Sva), two, vjj/itu, a filament), 



includes plants with four stamens, of which two 



are long, and two are short. 



XV, Tetradynamia (tet^k, four times, dvo), vrj/ua), with six 



stamens, of which four are long, and two are short. 



4th. Connection. The five succeeding classes depend upon 



the connection of the stamens, in various ways, 



XVI, MoNADELPHiA (/uovog, ad6).(pog, a brother), includes 

 plants with the filaments united into one set or 

 fraternity. 

 XVII, DiADELPHiA (dv(o, adelffog), into two sets or fraternities. 

 XVIII, PoLYADELPHiA (nolvg, aSslcfog), into many sets or fra- 

 ternities. 

 XIX, Syngenesia, {aw, together, ysveaig, origin), stamens 

 united by their anthers, into a tube. 

 XX, Gynandria {yvvri, §51, note, «'^'?9)j stamens consoli- 

 dated with the style. 



