74 STUDY OF COMMON PLANTS. 



VI. THE FLOWER. 



MATERIAL REQUIRED. 



Flowers of white Trillium, T. grandiflorum, Salisb. Other species may 



be used. 

 Cultivated Fuchsia. Specimens must be selected that have not become 



double. 

 Several pots of cultivated primroses in flower, some specimens with 



long- and others with short-styled flowers. 

 Various wild flowers, or cultivated kinds that have not undergone 



modification, may be substituted for the preceding. 



TRILLIUM. T. grandiflorum, Salisb. 



I. Study first the morphological characters. 1 



1. Is the flower complete, that is, are the calyx, corolla, 



stamens, and pistil all present ? 



2. What is the numerical plan as indicated by the num- 



ber of sepals, petals, stamens, and carpels ? 



3. Is the flower regular ? 



4. Is coalescence to be observed in the members of any 



whorl ? 



5. Describe in detail each part of the flower, noting 



shape, color, and other features. 



II. Make a transverse section of the ovary. Draw it 

 sufficiently enlarged to show all the parts clearly. Note 

 particularly the form, position, and place of attachment 



1 Read Gray, Lessons, pp. 79-117. 



