RE: Pitcher leaves in Pinguicula

jos franken (
Wed, 6 Dec 95 23:20:30 PST

In CP Digest 551

Andrew Marshall writes:

To everyone out there who responded to my question the
other day re.
the Bild-Schoner. Thanks for the help in getting this figured out.
Also as I am here wanted to note here that like Jos
Franken who
writes that one of his P. moranensis has formed a 'pitcher shaped
leaf. .................................. btw Jos, was your P.
moranensis from seed or tissue cultured? Has any one else seen
this occur and was it form seed or tissue culture?

I don't know, but it was a commercially grown plant so I suppose it was
tissue cultured. I divided the motherplant about 1 year ago into 10 new
plants. Only 1 has the pitcher leaves, another one has a few minor
disformed (wrinkled) leaves and the rest have normal winter leaves, so
it is just a growthdisorder and not a genetic mutation. ( I wish it was
:-) ) The pitcher leaves are about 1 month old and look as healthy as
the other leaves.

and Juerg Steiger writes:

My pitcher shaped leaves of Ping. grandiflora, vulgaris and
longifolia had the same 'life expectancy' as normal leaves (i.e.
several months). All plants were seed cultured. I guess this
malformation phenomenon happens from time to time also in wild
plants, but obviously the combination of the Pinguicula-type
digestive glands in the inside of a pitcher-shaped leave proved to
offer no advantage during evolution.

that is only true _if_ is a genetic aberration. If it is just a growth
disorder that happens every now and then, I think it cannot play a role
in "the survival of the fittest".

Happy growing to you all,

Jos Franken
Name: jos franken
Phone: +31 76 522 8411 or +31 76 522 6370 Fax: +31 76 522 1967
Smail: Graaf Hendrik III ln 79b, 4819 CD BREDA, THE NETHERLANDS