390 PINGUICULA GRANDIFLORA. Cuap. XVL 
amount of pollen must be blown from the many 
wind-fertilised carices, grasses, &c., growing where 
Pinguicula lives, on to the leaves thickly covered with 
viscid glands and forming large rosettes. Even a few 
grains of pollen on.a single gland causes it to 
secrete copiously. We haye also seen how fre- 
quently the small leaves of Erica tetraliz and of 
other plants, as well as various kinds of seeds and 
fruits, especially of Carex, adhere to the leaves. One 
leaf of the Pingui¢ula had caught ten of the little 
leaves of the Erica; and three leaves on the same 
plant had each caught a seed. Seeds subjected 
to the action of the secretion are sometimes killed, 
or the seedlings injured. We may, therefore, con- 
clude that Pinguicula vulgaris, with its small roots, 
is not only supported to a large extent by the extra- 
ordinary number of insects which it habitually cap- 
tures, but likewise draws some nourishment from the 
pollen, leaves, and seeds of other plants which often 
adhere to its leaves. It is therefore partly a vegetable 
as well as an animal feeder. 
PINGUICULA GRANDIFLORA. 
This species is so closely allied to the last that it is 
ranked by Dr. Hooker as a sub-species. It differs 
chiefly in the larger size of its leaves, and in the 
glandular hairs near the basal part of the midrib 
being longer. But it likewise differs in constitution; 
I hear from Mr. Ralfs, who was so kind as to send 
me plants from Cornwall, that it grows in rather 
different sites; and Dr. Moore, of the Glasnevin 
Botanic Gardens, informs me that it-is much more 
manageable under culture, growing freely and flower- 
ing annually; whilst Pinguicula vulgaris has to be 
renewed every year. Myr. Ralfs found numerous 
