524 



DICOTYLEBONES. 



b. 4-stamened, didynamous (Fig. 564). Scrophularia 

 (Fig-wort, Fig. 565) has cymose inflorescences in a panicle; the 

 corolla (Fig. 565) is urceolate, short two-lipped ; the posterior 



FIG. 06(1. Antirrhinuin mnjus. A flower, ami 

 the upper lip of a flower with Ihe stamens. 



FIG. 568. Dig ifafi's 

 purpurea. 



stamens are present as a scale below the upper lip of the 

 corolla (Fig 565 s). S. nodosa has a tuberous rhizome. Pentstemon ; the 

 posterior stamen is barren and very long. Antirrhinum. (Snapdragon). 

 The corolla (Fig. 564) is personate, i.e. bilabiate, but with the 



FIG. 565. Scrophularia nodosa. Protogynous flower in various stages : A ? stage ; g 

 the stigma projecting from the throat of the corolla ; B the same in longitudinal section ; 

 C <J stage, the stigma is bent clown and its former position occupied by the stamens ; s 

 staminode ; g stigma; d nectary. 



under lip arched to such an extent that it meets the upper lip, 

 closes the corolla throat, and entirely conceals the stamens and 



