166 
PLANT STUDIES 
the water, and if it attempts to escape by crawling up the 
sides of the urn, the thicket of downward-pointing hairs 
prevents. If it seeks to fly away from the rim, it flies 
towards the translucent spots in the hood, which look like 
the way of escape, as the direction of entrance is in the 
shadow of the hood. Pounding against the hood, the fly 
falls into the tube. This Southern pitcher plant is known 
FIG. 156. Two leaves of a sun-dew. The one to the right has its glandular hairs 
fully expanded ; the one to the left shows half of the hairs bending inward, in the 
position assumed when an insect has been captured. After KEENER. 
as a great fly-catcher, and the urns are often well supplied 
with the decaying bodies of these insects. 
A much larger Californian pitcher plant has still more 
elaborate contrivances for attracting insects (see Fig. 154). 
(2) Drosera. The droseras are commonly known as 
" sun-dews," and grow in swampy regions, the leaves form- 
ing small rosettes on the ground (see Fig. 155). In one 
form the leaf blade is round, and the margin is beset by 
prominent bristle-like hairs, each with a globular gland at 
its tip (see Fig. 156). Shorter gland-bearing hairs are 
