STUDY 15. 
A LYCOPOD. Selaginella. 
A. The Vegetative Portion. 
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What is the position, form, and method of branching 
of the stem? 
How many sizes.of leaves? Why? 
Study the form and arrangement of the leaves. 
Draw and describe the leaves. 
What is the origin and form of the roots? Make a 
drawing to illustrate. 
B. The Reproductive Portion (or Leafy Spike; the 
1. 
2. 
3. 
Cc. 
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Strobilus). 
How do the leaves differ in form and arrangement 
from those of the vegetative portion ? 
Find sporangia in the upper angles of the leaves. 
Where are they situated, and how do their contents 
(spores) differ in relative size and number? The 
smaller are microspores, the larger are megaspores. 
Make a diagram of a longitudinal sectional view of a 
strobilus. 
Life Problems. 
What advantage is the creeping position ? 
What seems to be the cause for such forms and 
arrangements of its leaves ? 
How does it multiply ? 
What is its life history ? 
What is the purpose of the two sizes of spores 
(heterospory ) ? 
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