IQ6 MORPHOLOGY AND LIFE HISTORY 



2. Observe: 



(a) The outer circle of parts (calyx) composed 

 of separate sepals. How many sepals are 

 there? Describe them as you did the leaves. 

 NOTE. The term calyx comes from the Greek 

 word kalyxj a cup; the verb is kalypto, to 

 cover. What organ of the moss has its name 

 derived from the same source as calyx? 



(b) The circle of parts (corolla) next within the 

 calyx, composed of separate petals. How 

 many petals? Are they opposite or alternate 

 with the sepals? Record their color in fresh 

 (not preserved) specimens. Describe a petal 

 as you did the leaf and sepal. 



(c) With the corolla, a circle of three microsporo- 

 phylls (stamens) each opposite a sepal. By 

 carefully bending back (but not removing) 

 the sepals and petals, observe whether or not 

 the other stamens are in the same circle as 

 the first ones, or in an inner (higher) circle. 

 Describe their location with reference to the 

 petals. Record the total number of stamens. 

 Note that each stamen is composed of: 



(1) A stalk (filament), bearing at its tip, 



(2) An anther, composed of marginal, linear 

 pollen-sacs (microsporangia), and connect- 

 ing tissue (the connective). Observe 

 whether the connective is prolonged 

 beyond the sporangia. Note that the pol- 

 len sacs dehisce (open) on the inside (i.e., 

 are introrse). Describe their manner of 

 dehiscence. 



(3) What do the pollen-sacs contain? De- 

 scribe its color. 



