432 UTRICULARIA MONTANA. Cuar. X VII. 
hereaiter oe described. These rhizomes appear ex- 
actly like roots, but occasionally throw up green 
shoots. They penetrate the earth sometimes to the 
depth of more than 2 inches; but when the plant 
grows as an epiphyte, they must creep amidst the 
mosses, roots, decayed bark, &c., with which the trees 
of these countries are thickly covered. 
As the bladders are attached to the rhizomes, they 
are necessarily subterranean. They are produced in 
extraordinary numbers. One of my plants, though 
young, must have borne several hundreds ; for a single 
branch out of an entangled mass had thirty-two, and 
another branch, about 2 inches in length (but with its 
end and one side branch broken off), had seventy-three 
bladders.* The bladders are compressed and rounded, 
with the ventral surface, or that between the summit 
of the long delicate footstalk and valve, extremely 
short (fig. 27). They are colourless and almost as 
transparent as glass, so that they appear smaller than 
they really are, the largest being under the 2, of an 
inch (1:27 mm.) in its longer diameter. They are 
formed of rather large angular cells, at the junctions 
of which oblong papillz project, corresponding with 
those on the surfaces of the bladders of the previous 
species. Similar papille abound on the rhizomes, and 
even on the entire leaves, but they are rather broader 
on the latter. Vessels, marked with parallel bars 
instead of by a spiral line, run up the footstalks, and 
* Prof. Oliver has figured a 
plant of Utricularia Jamesoniana 
(‘Proc. Linn. Soe.’ vol. iv. p. 169) 
having entire leaves and rhizomes, 
like those of our present species; 
but the margins of the terminal 
halves of some of the Icaves are 
sonverted into bladders. This fact 
clearly indicates that the bladders 
on the rhizomes of the present and 
following species are modified seg- 
ments of the leaf; and they are 
thus brought into accordance with 
the bladders attached to the di- 
vided and floating leaves of the 
aquatic species. 
