WAKE-ROBIN. 



Trillium sp. 



ANGIOSPERMS; MONOCOTYLEDONS; LILIACE^. 



PRELIMINARY. 



THE various species of Trillium may be found flowering 

 in rich woods in early spring. The plants are easily 

 distinguished from others by the straight naked stems 

 that are fifteen to thirty centimeters in height, the circle 

 of three broad net-veined leaves, and the single terminal 

 flower with three floral organs in each cycle. The flow- 

 ers vary considerably in the different species, but any of 

 these species will serve well for this study. 1 



If the laboratory study is not to be made at the time 

 Trilliums are flowering, a good supply should be preserved 

 both dry and in alcohol or formalin for class work. 



1 In case material for work with Trillium cannot be had, in place 

 of it may be used the hyacinth, tulip, lily (Lilium), wild onion (Allium), 

 or any other such plant belonging to the Monocotyledons, the group 

 to which Trillium belongs. In case one of these is used, the outline 

 given for Trillium will serve to guide the study in a general way. 



145 



