TRILLIUM. 



Trillium rccurvatum Beck. 



PRELIMINARY. 



THE Trillium designated, as well as T. sessile, is 

 found in the spring, generally in rich woods, and may 

 be readily recognized by the naked stems, from fifteen 

 to thirty centimeters (six inches to a foot) or more high, 

 bearing at the summit a circle of three broad netted- 

 veined leaves, at the center of which (the apex of the 

 stem) stands a single sessile dark-purple flower. The 

 stem rises from a deep-seated, somewhat toothed, very 

 thick rootstock, which bears the fibrous roots 

 along its under surface. In the other Trilliums, which 

 are at all common, the flowers are usually white 

 or pinkish, or purple in one case, and stalked. Any 

 species may be used for the laboratory work. 



Although Trillium is now considered a member of 

 the lily family, the largest order of petaloideous mon- 

 ocotyledons, it is not a very characteristic member, 

 but has been selected for its general distribution, its 

 completeness and simplicity, and for its convenient 

 size. 



The materials needed are fresh or alcoholic spec- 



