GAMOPETAL/ I51 
with acute half-erect segments. The capsule is 
drooping and short, opening by basal valves. 
Honey is secreted at the bottom of the wide bell, 
and the flowers attract many insects. The anthers 
do not form a column; the filaments form triangular 
valves below, protecting the honey. 
The stigma is lobed above. The stamens at first 
are no longer than the pistil, then open inwards, and 
the pollen sticks to the style, insects brushing it off. 
Then the style gets longer and the lobes diverge, so 
that fresh pollen from another flower is transferred 
to it by insect-visitors and cross-pollination is thus 
effected. As in its inverted position the stigma is 
turned down pollen does not fall on it automatically, 
so insects must bear it. 
THE HEATH GROUP. 
The different kinds of heaths, though liable to con- 
fusion amongst themselves, are, as a group, the Order 
Ericacez, easily recognised. In the first place, they 
have a marked habit, which is very characteristic, 
having wiry, suberect, stems, with filiform leaves, 
adapted to dry conditions. They grow in associa- 
tions giving a character to the physiognomy of the 
vegetation. The pink pendulous bells, especially 
Crimson Heather, make the hills in August almost 
aglow with colour. 
There are about 1350 species which are found in all 
parts of the world, except in hot and desert regions. 
They grow on arctic moorlands and bogs in high- 
