Bladders:
I haven't said anything about how you
can distinguish U. ochroleuca from U. intermedia,
have I? This is a tricky realm. The best way is to use a microscope and
look at the quadrifid glands inside those bladders. Look to a source like
Taylor's monograph on Utricularia for more information on this.
Also, there are differences in the number of leaf setulae on the terminal
leaf segments (U. ochroleuca has far fewer). There are also some
technical details about the leaflet tips, and the attachment points of
the setulae to the leaf margin. Subtle stuff, and unless I get really
bored and add this information to the FAQ, you'll have to get a copy of
Taylor's monograph for more information.
Oddly, the quadrifid glands in the bladders of the Californian
U. intermedia are rather unstable in their orientations. I'm still
studying this.
