445 
Insectivorous Plants [Part II). 
pitchered leaves as well as of flat unpitchered ones. I find them 
likewise on the scales of young rhizomes, on the long, slender 
flower-stalks, and on the bracts which these bear. In the two 
last cases they occur among the slender, elongated ‘ encapsulat- 
ing ’ hairs of Dickson. On the outer surface of the sepals 
they are even more numerous and larger. 
The receptacular processes between the stamens and carpels 
are specially curious. Each is a stout, hollow, up-bulging of 
the epidermis of the receptacle (Plate XXI, Fig. 37), which 
rarely may bifurcate, but in all cases ends in a flat top, com- 
posed of an outer circle of cells with two central semi-lunar 
cells, showing what is apparently a stomatic orifice between 
them. I have tried to learn by study of living flowers what 
these secrete, but have got no satisfactory result. They may 
exude something to tempt insects amongst the stamens and 
carpels for pollination purposes, but their appearance suggests 
rather that they are stalked stomata. 
Insects are seldom caught by the pitchers of this genus so 
far as I know them, and I have never seen insects about the 
flowers. From the accounts of those who have examined the 
plant in a wild state, we learn that the pitchers do catch a 
tolerable number of insects, and that these will be attracted 
to the flowers is natural, since alluring glands are everywhere 
very abundant. 
VIII. On Hybridity and Relation of the Species to 
EACH OTHER IN THE DIFFERENT GENERA. 
In the course of the present inquiry I was greatly impressed 
with the number and beauty of hybrids obtained by gardeners 
during the short time that these plants have been in general 
cultivation. Equally was I impressed, from conversations with 
well-known importers and cultivators, by the difficulty expe- 
rienced in deciding whether certain forms raised from wild 
seed should be viewed as true species or hybrids. I deter- 
mined, therefore, to include hybrids in the range of my work. 
In his article on Nepenthes in the Gardener’s Chronicle 1 , 
1 Op. cit. Vol. xx, 1883. 
