U. purpurea, U. resupinata

Michael.Chamberland (23274MJC@MSU.EDU)
Tue, 28 Nov 95 22:31 EST

Regarding Utricularia purpurea and turions, I visited some sites for
U. purpurea over Turkey day. The plants had not formed anything
resembling conventional turions. The stems showed very little
reduction in internode lengths (in comparison to active growing stems).
However, the ultimate branch segments were curled in apon themselves
in a way that may offer some protection to the meristems?
The U. purpurea looked in surprising good shape in spite of most stems
being partly or entirely embedded in ice! Some stems were reddish-brown
and looked blasted, but on thawing they proved to be firm and I expect
are viable.

I also visited a site where U. resupinata was blooming on exposed sand
bars 45 days earlier. These sand bars were now entirely submerged under
about 10 cm of water (the upper 2 cm frozen). There was no sign of the
green leaves or seed capsules of the plants. However, white stolons of
the Utricularia were still present in the sand, even with bladders.

Michael Chamberland