TEASEL 203 
tube is not wide enough for an insect to insert its head if there were 
two stigmas. The inner surface of the stigma is covered with papillz. 
The floral bracts overtop the anthers and stigmas, and insects do not 
touch the last with the ventral surface in creeping over the flower, but 
with the head when inserting the proboscis. Hence it is of advantage 
that the second stigma is rudimentary, as if both were present the 
inner surfaces, which alone are receptive, might not be rubbed by the 
bee in its effort to penetrate the tube. Honey is secreted in the upper 
part of the ovary, and the corolla tube by its length helps to contain 
TEASEL (Dipsacus sylvestris, Huds.) 
and conceal it. The divisions get into each other’s way, an instance in 
which nature can afford to improve the present arrangement. 
The Teasel is visited by Lombus rupestris, B. lapidarius, B. 
agrorum. 
The fruits are provided with a parachute arrangement which aids 
in wind-dispersal, in the form of persistent bracts or leaf-like organs, 
The Teasel is a sand-loving plant growing on a sand soil, but 
requires also some proportion of humus. 
Only moths feed on it, as the Burnished Brass Plusza chrysitis, 
Square-spot Rustic Agrotis xanthographa, Eupecitia roseana, Auti- 
thena Gentianana. 
Dipsacus, Dioscorides, is from the Greek adzfsao, I thirst, because 
of the water collected in the base of the leaves. Teasel is from 
