41.1 



THE ESSENTIAL ORGANS. 



118. The number of the stamens is said to be defi- 

 nite when not exceeding twenty, as is sometimes 

 definitely expressed by such terms as follow, com- 

 pounded of the Greek numerals viz., monandrous, 



101 



Essential organs. 99, Rhododendron, five stamens (), one pistil (p), oblique or slightly irregular. 100, 

 Flower of ^Esculus (Buckeye), regular, 5-toothed calyx (c), very irregular 4-petalled corolla, seven stamens 

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



having one stamen to each flower ; diandrous, with 



two stamens; petandrous, with five stamens. If the 



number exceeds twenty, it is said to be indefinite 

 (denoted thus, oo ) or polyandrous. 



104 



102. Stamens (diadelphous) of a Leguminous plant. 103, Stamens (syngenesious) of a Composite ; /, 

 filaments distinct ; a, anthers united ; s, stigmas revolute, etc. 104, Tetradynamous stamens of a Crucifer. 



105, Gynandrous column of Cypripedium ; o, ovary ; r, torus ; , sterile stamen ; a, twopollinia ; c, stigma. 



106, Didynamous stamens of Lophospermum. 



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

 may be more definitely stated here as hypogynous, on 



