UTRICULARIA CLANDESTINA.
This North American species, which is aquatic like the three foregoing
ones, has been described by Mrs. Treat, of New Jersey, whose excellent
observations have already been largely quoted. I have not as yet seen
any full description by her of the structure of the bladder, but it
appears to be lined with quadrifid processes. A vast number of captured
animals were found within the bladders; some being crustaceans, but the
greater number delicate, elongated larv , I suppose of Culicidae. On
some stems, fully nine out of every ten bladders contained these larv
or their remains. The larv showed signs of life from twenty-four to
thirty-six hours after being imprisoned, and then perished. [page 431]
CHAPTER XVIII.
UTRICULARIA (continued).
Utricularia montana Description of the bladders on the subterranean
rhizomes Prey captured by the bladders of plants under culture and in a
state of nature Absorption by the quadrifid processes and glands Tubers
serving as reservoirs for water Various other species of
Utricularia Polypompholyx Genlisea, different nature of the trap for
capturing prey Diversified methods by which plants are nourished.
FIG. 26. (Utricularia montana.) Rhizome swollen into a tuber; the
branches bearing minute bladders; of natural size.
Utricularia montana. This species inhabits the tropical parts of South
America, and is said to be epiphytic; but, judging from the state of
the roots (rhizomes) of some dried specimens from the herbarium at Kew,
it likewise lives in earth, probably in crevices of rocks. In English
hothouses it is grown in peaty soil. Lady Dorothy Nevill was so kind as
to give me a fine plant, and I received another from Dr. Hooker. The
leaves are entire, instead of being much divided, as in the foregoing
aquatic species. They are elongated, about 1 1/2 inch in breadth, and
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