VARIATION IN TRILLIUM GRANDlFLORUM. 1 75 



175 a. Only two leaves are present, the blades of which are 

 43 x 52 mm. and 35 x 56 mm. in size. There are only two sepals 

 which are opposite and two petals, also opposite. 



176 b. Three stamens with filaments 6 mm. long" and anthers 

 aborted. 



177 b. Two leaves reduced to spurs and three stamens with 

 filaments 2 mm. long and anthers aborted. 



178 a. Only three stamens, which are green in color and have 

 filaments 29, 20 and 9 mm. long and anthers 10, 10 and o mm. 

 long. 



181. A typical plant in which the rootstock sends up three 

 stems. 



182-185. Abnormal plants in which the rootstock sends up 

 three stems. 



184 a. Five stamens have filaments 3 mm. long and anthers 

 aborted. 



b. The third leaf has the petiole 38 mm. long and the 

 blade 34 x 44 mm. in size. 



c. The place of the third leaf is taken by two leaves hav- 

 ing a common petiole 4 mm. long and separate petioles 50 and 

 46 mm. long and blades 23 x 38 mm. and 26 x 44 mm. in size. 



185 a. One petal has a green stripe 5 mm. wide along one 

 margin. 



b. One petal has four yellowish green veins, one is 

 notched at one side and the notch has a yellow pollen bearing 

 edge backed by a green line, and the third petal is lacking, its 

 space being left open. 



c. Only two sepals, the space of the third being open. 

 Only two petals which are opposite. One of them is 37 x 44 

 mm. in size and entirely white. The other is 48 x 54 mm. in 

 size and has directly over the open seoal soace a green stripe 

 26 x 54 mm. in size. Within this green stripe is a white stripe 

 3 x 54 mm. in size. Two of the stamens have their filaments 

 fused and their anthers fused for 4 mm., the remaining 10 mm. 

 of the anthers being separate. 



