Re: Devil's Claws

Barry Meyers-Rice (barry@as.arizona.edu)
Thu, 1 Apr 93 11:46:58 MST

>I do have a catalog listing about 6 varieties of Devil's Claw cultivated
>by the O'odham Indians in the Southwest U.S. Seeds are sold by the
>Native Seeds/Search organization. If you are interested, I could get
>details when I get home.

>I knew I had seen that genus somewhere before...

...and if you look carefully, you will see the Native Seed/Search
is in Tucson, as am I. In fact, it is between the Fry's shopping center
and the Tucson Botanical garden, across the street from a Circle-K
convenience store.

My wife and I already grow _Proboscidea parviflora_ var. Hohokamiana.
A great plant---amazing seed pods. Unfortunately, they don't have
_Martynia lutea_, although they recently got some seeds of _M.annua_.

Well Jan, I experimented with the flowers of my _U.inflata_. After removing
most of the obstructing corolla lower lip, I carefully removed pollen from
the anthers and placed it on the stigmatic surface. I applied pollen several
times, insuring the stigmatic surface was mightily stimulated. Much to my
extreme astonishment, within a few minutes I could see clearly that the
stigmatic surface had slowly moved so that its upper surface was now
nearly in contact with the corolla's inner surface. The motion was so slow
I did not see it, but could detect easily the total displacement. Heady
with success, I experimented on another flower. This time I stroked the
stigma without applying pollen. Again a response, but not as much. I
then applied pollen and the stima became as fully flexed as in the first
flower. But I am not convinced the pollen is important---the flowers were
of different ages, and the second flower's continued flexing may have been
due to my repeated stimulus. Fascinating. I tried this on a few other
_Lentibulariaceae_, from _Pinguicula_, other _Utricularia_ and _Genlisea_
but was not convinced of seeing this response in the other plants.
Fascinating.

B