THE ESSENTIAL ORGANS. 



41 



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., monandr&uS) 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, oo ) 

 or polyandrous. 



Esurntinl orijrnn*. 99, Rhododendron, live stamens (*), one pistil (p), oblique or slightly irregular. 100, 

 Flower til /Ksculiis (Buckeye), regular, 5-toutlied calyx (), very irregular 4-petalled corolla, se\ en stamem 

 unequal, one style (). 101, Klower of Hydrastis; , sepals deciduous. 



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

 be more definitely stated here as hypogynous, on the receptacle 

 below the ovaries ; periyynous, on the calyx around the ovary ; 



102, Stamens (diadelphons) of a Leguminous plant. 103, Stamens (synsenesious) of a Composite; / 

 Blaments distinct: i, iinthers united; , stigmas revolute, etc. . 104, Tetradynanious stamens of a i.'nf 



cif'er. 105, (Jynandnms column of Oypripedium; n, ovary; r, torus; , sterile stamen; a, two polliiila 

 , stigma. 1UO, Didynamous stamens of Lophospermum. 



epipetalous, on the corolla, as in Phlox ; epigynous, on the ovary 

 at its summit, and gynandrous (/UVT), pistil, avfjpsf, stamens) on 

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



