Hi Jim,

Interesting paper. In the southern part of the Chicago area in the
Kankakee sands, we have Opuntia humifusa (a.k.a. O.
compressa/compressa microsperma). I'll have to keep an eye peeled
for associations like the one in the paper you added.

John D.

--- In chicagolichens@yahoogroups.com, Jim Bennett <jpbennet@w...>
wrote:
>
> Folks,
>
> Because of John Denk's message, I am posting my paper on lichens
and
> Opuntia in Wisconsin at the Yahoo site.
>
> Jim Bennett