
          large Cereus from California I did not get, but fortunately
had a few seeds which enabled me to recognize it as a true
Cereus. If I could get a few fragments of the plants
only, a bunch of spines of so etc etc, I could give a
much better account of those plants. I have instructed
Col Emory how to observethe Cacti, and I have
no doubt he will pay more attention to their characters
in future - through the species he may meet between
Vera Cruz and Mexico are not as interesting to us
as those of the regions bordering on our confines.

Dr Wislizenus was detained in the printing of his
report most miserably ; but will probably be done with
it before the [crossed out: end of] middle of this month - so he
writes me. Your notes and suggestions in regard to
my appendix are very thankfully acknowedged by
me and I hope you will always freely tell me of
any mistakes I may have made or suggest any alterations
you may think proper.

I have my great doubts about Wislizenia, and am
afraid that it must be [?] to your Oxystylis as
a second species. You do not mention a stipes of the
fruit in Oxystylis, but even if there be none, that alone
could probably not distinguish both plants generally.

I will have extra copies of my appendix to Dr W's report
sent to all my botanical correspondents in this country
and Europe.

I shall be glad to see Fremont here. I hope to
get some of his duplicates, after they have passed
through your hands. If there is any thing of Cactaceae
and Cuscutae in it, which he promised me to collect
with particular care, I should offer you to take
hold of them and describe them for your work -
on Fremonts plants  - for a work it will become!

I have before me Hookers plate of [V?] [?geyeri].
It is totally different from my Bilobium. But Bilobium
stands to Harvey's California genus [inserted: Dithyrea in Hook Jour. Bot] very nearly as

        