(no subject)

Jan Schlauer (zxmsl01@studserv.zdv.uni-tuebingen.de)
Thu, 1 Apr 93 21:09:56 +0200

Barry,
*F*A*S*C*I*N*A*T*I*N*G*!!!!!!!!!!!!!!!!!!!!!!!!!!!
Thanks so much for the experiment on _U.inflata_ stigmata. So this
strange behaviour can be found in the Americans, too (I mean the stigma
movement of the _Utriculariae_, not the strange people stimulating
minute flowers's stigmata). Interestingly, some Bignoniaceae and
Martyniaceae (Pedaliaceae not yet tried, to my knowledge), and
Scrophulariaceae have the movements, too. So the genes for this seem to
be present in the very ancestral prototype of some scrophularialean
(sorry for this word monster meaning "belonging to the order
Scrophulariales) lineage. But it seems to vanish and reappear in
evolution, because the genera with this are not very closely related. I
think it would not be too far-fetched to state *all* members of _U.sect.
Utricularia_ have irritable stigmata (at least 2 species of 2 tested so
far, OK, OK, we need some more evidence...). TNX again for your efforts
and contribution to utricularian knowledge!

Kind regards
Jan