THE ESSENTIAL ORGANS. 



118. The number of the stamens is said to be definite when 

 not exceeding twenty, as is sometimes definitely expressed by 

 such terms as follow, compounded of the Greek numerals 

 viz., monandrous^ having one stamen to each flower; diandrous^ 

 with two stamens ; pentandrous, with five stamens. If the num- 

 ber exceeds twenty, it is said to be indefinite (denoted thus, GO ) 

 or polyandrous. 



101 



Essential nrynn*. 99, Rhododendron, five stamens (*), one pistil (p\ oblique or slightly irregular. 100 % 

 Flower ot'/Esculus (Buckeye), regular, o-toothed calyx (>), very irregular 4-petalled corolla, seven stameui 

 nnequal. one style (*). 101, Flower of Hydrastis; s, sepals deciduous. 



119. The position or insertkm of the stamens ( 55 ) may 

 be more definitely stated here as hypogynous, on the receptacle 

 below the ovaries ; perigynous^ on the calyx around the ovary ; 



102, Stamens (dbulelphous) of a Leguminous plant. 103, Stamens (syngenesious) of a Composite: / 

 filaments distinct: u, anthers united; , stigmas revolute, etc. lOt, Tetradynamous stamens of a On- 

 cif'er. lOo, <i\ nandrous culumn of l/ypripeilium; o, ovary; r, torus; s, sterile stamen; a, two pollinia 

 c, stigma. 10i3, Didynunious stamens of Lopliospermum. 



epipetaloti*, on the corolla, as in Phlox ; epigynous, on the ovary 

 at its summit, and yynandrous (/uvrj, pistil, av^ps.c, stamens) on 

 the pistil, that is, when the stamens are adherent to the style, as 



