PARTS OF A LILY 
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of these organs are the colored parts which together form the 
perianth of the flower (Greek, peri, around, anthos, a flower). 
In the lily the perianth consists of six parts of the same color, 
size, and shape. Because of the even size and regular shape of 
the parts of the perianth of the lily, we speak of it as a regular 
flower. The perianth is an accessory part of the flower, for 
seeds can be made without it, the stamens and the pistil 
being the only essential parts. Any flower which has all 
the parts which a flower may have is called a complete flower. 
If it has both stamens and pistil, the essential parts, it is 
called a perfect flower. * 
LABORATORY STUDY OF A LILY 
Each pupil is to be provided with a lily. 
Draw the flower and label the parts as follows : (1) perianth, the large 
outer parts taken together; (2) stamens, the slender parts bearing the 
yellow, dust-like pollen; (3) pistil, the central part of the flower; 
(4) peduncle, the flower stalk. 
How many divisions has the perianth ? Are they all the same shape, 
size, and color ? Have they all furrows or markings leading to the base 
of the flower ? Are there drops of nectar, a sweet substance at the base 
of the stamens? 
itHow many stamens are there? Draw one and label (1) filament, 
the stalk-like part; (2) anther , the enlarged top which bears the pollen; 
if possible, examine the pollen grains with a microscope. 
Draw the pistil and label (1) stigma, the enlarged upper end; (2) style, 
the slender portion below the stigma; (3) ovary, the enlarged base. 
How many lobes has the stigma? Is it sticky? Are there pollen 
grains upon it ? 
Cut across the ovary. How many chambers has it ? Are there few 
or many ovules (small, white bodies) in each? Draw. Label the parts 
to which the ovules are attached, placenta. 
Let a lily stand in water till it withers. What parts have dried up ? 
What other changes have taken place? Cut across the ovary. Com¬ 
pare with your drawing and tell what differences you see. Draw the 
ovary as it now appears. 
Besides the four sets of parts found in nasturtium flowers, 
other parts will be found in certain flowers, the receptacle, 
