PLATE 2. Variation in Trillium grandiflorum. [After BRITCHER.] 



Mr. Britcher collected all these varieties at one time in a single very restricted area. Observe 

 that the plants differ in size of blossoms, color of petals (all white, A ; all green, C, D, ^; or of 

 green and white in varying proportions, B, E, F, G, H, /) ; shape of petals (sessile, A, B, C, H, I ; 

 or stalked with stalks of varying lengths, A E, F, G, J ; broad, A ; or slender, H) ; form of flower 

 bracts (sessile, A, B, C, D, E, G, H, I ; or with long, J, or short, F, stalks; broad, E, F,G,J\ 

 or slender, A, B, C, H) ; position of stem leaves (arising from the base of the stem, G; or situ- 

 ated at different levels upon the stem, y, F, H, D, B, C \ often occurring just below the flower 

 bracts, A; in one case absent altogether, E) ; form of stem leaves (sessile, A, B, C, E; or with 

 petioles of varying lengths, D, F, I, H, J, G ; slender, //, or broad, A) ; number of stem leaves 

 (one, G; or three, A, B, C, D, F, I, J ; or none, E) ; number of stalks from a single bulb 

 (one, A, B, C, D, E, F, G, J ; two, //, / ; or in some cases, not shown, three may be found). 

 The stamens and pistils also vary in form and in size, B t D, F, G, J. Probably no finer example 

 of variation in any plant has been described. 



