Plate IX. 



Fig. 18. 13. A typical plant of Trillium grandiflorum with 

 narrow-petaled flower. 



12. A typical plant with broad-petaled flower and broad 

 leaves, which usually accompany such flowers. 



30. A plant varying from the typical ones by having short- 

 petioled leaves, broadened sepals, petals marked with green and 

 the "cup" formed by the bases of the petals more open than 

 normally. One petal is entirely white, one has a slight trace of 

 green along the centre distally and the third has a green centre 

 stripe 3 mm. wide. 



Fig. 19. 15. A plant with petioled leaves and normal flower 

 parts, the "cup" formed by the bases of the petals showing in 

 side view. 



23. A plant with short-petioled leaves and with the proximal 

 or basal portions of the petals narrowed into stems. The petals 

 are green proximally, one of them to a lesser extent than the 

 other two. 



22. A plant with long-petioled leaves and stemmed petals. 



