Pinguicula, but more especially by Mr. Holland s statement, that water
insects are often found imprisoned in the bladders, which he suspects
are destined for the plant to feed on. * The plants which I first
received as Utricularia vulgaris from the New Forest in Hampshire and
from Cornwall, and which I have chiefly worked on, have been determined
by Dr. Hooker to be a very rare British species, the Utricularia
neglecta of Lehm.** I subsequently received the true Utricularia
vulgaris from Yorkshire. Since drawing up the following description
from my own observations and those of my son, Francis Darwin, an
important memoir by Prof. Cohn
* The Quart. Mag. of the High Wycombe Nat. Hist. Soc. July 1868, p.
5. Delpino ( Ult. Osservaz. sulla Dicogamia, &c. 1868-1869, p. 16)
also quotes Crouan as having found (1858) crustaceans within the
bladders of Utricularia vulgaris.
** I am much indebted to the Rev. H.M. Wilkinson, of Bistern, for
having sent me several fine lots of this species from the New Forest.
Mr. Ralfs was also so kind as to send me living plants of the same
species from near Penzance in Cornwall. [page 396]
on Utricularia vulgaris has appeared;* and it has been no small
satisfaction to me to find that my account agrees almost completely
with that of this distinguished observer. I will publish my description
as it stood before reading that by Prof. Cohn, adding occasionally some
statements on his authority.
FIG. 17. (Utricularia neglecta.) Branch with the divided leaves bearing
bladders; about twice enlarged.
Utricularia neglecta. The general appearance of a branch (about twice
enlarged), with the pinnatifid leaves bearing bladders, is represented
in the above sketch (fig. 17). The leaves continually bifurcate, so
that a full-grown one terminates in from twenty to thirty
* Beitrage zur Biologie der Plflanzen drittes Heft, 1875. [page 397]
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