Manchester Memoirs, Vol. liv. (1909), No. 3. 3 



of growth. This end narrows bluntly to the connective, 

 which is about -5 mm. long. The connective joins the 

 anther at a point on the major axis but below the 

 middle, so that, in the bud, the greater part of the anther 

 is above the connective. Just above this junction and on 

 either side of it, a rounded knob projects from the back of 

 the anther. The cells of these knobs are circular in 



Fig. II. Diagram to show position of the stamen shortly 

 after the opening of the petals. The filaments are no 

 longer upright, but make an angle with the axis of the 

 gynophore. The anther has become extrorse, and hangs 

 vertically with power to swing about its point of suspen- 

 sion from the filament. x 4. 



section and thick walled, forming a mechanical tissue, the 

 function of which becomes apparent later. 



The pressure of the petals on the anthers being 

 removed as the former expand, the latter are left in an 

 unstable condition and move outwards to hang perpendi- 

 cularly downwards, thus becoming extrorse. As far as I 

 understand his account, Warnstorf neglects this movement 

 altogether, or, otherwise, I do not understand his state- 

 ment that the anthers "are directed outwards (which I 



