58 NEW ZEALAND NATURE-STUDY BOOK 
called the corolla, which usually forms the coloured part 
of the flower: (c) a large number of yellow stamens, 
each consisting of a stalk, or filament, and a head, or 
anther, and attached to the receptacle—the anther when 
ripe being full of yellow pollen grains: (d) a central 
portion occupied by a number of small green bodies called 
carpels, also attached to the receptacle. 
If the flower be cut down the centre, the various parts 
just described will be clearly seen in position. If now 
we remove the different parts, we can further examine 
them in detail. Hach petal will be found to be roughly 
{ya Caan 
Car: = Ks 
Fig, 47.—A, Vertical section of Flowers of Buttercup. 
cor, corolla of petals ; cal, calyx of sepals ; sta, stamens ; car, carpels ; r, receptacle. 
B, Flower of Buttercup dissected. 
p. petal; n, nectary ; 7, receptacle’; a, anther; J, filament or anther-stalk; car, carpel ; 
0, OVary ; s, stigma. 
triangular in shape, and to possess at its tapering end a 
small nectary or honey gland. In the carpel we shall be 
able to make out a small glistening point, the stigma, 
which is connected with the lower portion, the ovary. 
In the ovary is a little ege-shaped body, the ovule. The 
filament and anther of the stamen and the shape of the 
receptacle will be seen with much greater clearness in the 
cut specimen. 
The Wall-flower. If the blossom of a Wall-flower 
be examined in a similar way, the pupil will be able to 
verify the following description. Four small narrow sepals 
