36 A TEXT-BOOK OF BOTANY 
bog plant (Tig. 34), but is not so elaborately constructed 
for capturing insects as is a common southern Sarra- 
cenia (Fig. 35). In this plant the leaves are slender, hol- 
low cones, and rise in a tuft from the swampy ground. 
The mouth of this conical urn is overarched and shaded by 
a hood, in which are translucent spots, like numerous small 
windows. Around the mouth of the urn are glands which 
secrete a sweet liq- 
uid, known as nectar. 
Inside, just below 
/ the rim of the urn, 
is a glazed zone, so 
smooth that insects 
cannot walk upon 
it. Below the glazed 
zone is another one 
thickly set with stiff, 
downward-pointing 
hairs; and below this 
is the liquid in the 
bottom of the urn. 
If a fly, attracted to 
the nectar at the rim 
yy of the urn, attempts 
to descend within the 
t urn, it slips on the 
“ glazed zone and falls 
into the water; and 
if it attempts to 
escape by crawling, 
the downward-point- 
ing hairs prevent. If 
it seeks to fly from the rim, it naturally flies toward the 
translucent spots in the hood, since the direction of en- 
trance is in the shadow; and pounding against the hood, 
{iprrerareestr a 
Vic, 33.—Leuves of barberry developing as thorns. 
