PHANEROGAMIA 



665 



year. The inflorescence sometimes bears sessile dichasia of 2-3 flowers in a 

 terminal spike ; in other cases by the development of branches from the lower leaf- 

 axils it becomes a branched panicle. The single flowers have five stamens, and 

 are only slightly zygomorphic ; the three posterior stamens have hairy filaments, 

 and are further distinguished from the two anterior stamens by the transverse 



KM;. 74'J. .YiV(>f in/in ti'lun-irm (A nut. si/c). I'Msoxiir*. 



of their anthers. Diyitalis, Foxglove (Figs. 747, 748), has an obliquely 

 rainpanulate corolla and four stamens. The flowers hang from one side of the 

 obliquely ascending raceme. Scrophularia has a two-lipped corolla with a very 

 short lower lip. j^The corolla in Linaria and Antirrhinum is spurred. Veronica 

 and Gratiola have only two fertile stamens. 



(b) JRhinantheae.Tbia group includes a number of closely related genera which 

 have adopted a moiv or less completely parasitic mode of life. The most com- 



