
          Columbus Oct. 17, 1840

My Dear Sir

The letter from you &
Dr. Gray was received. I received also
by Mr. Matt the 13th No. of [Stephan] Endlicher.

It was somewhat a disappointment that
neither you nor Dr. G. remarked on my "rare
& difficult" plants numbered from 78 to 92. 
I wished you opinions on them, except the
[?] those I suposed would lay until
you were done with that order. But
I can readily imagine that in the great
press of that kind of business which crowds
upon you both my bundle was overlooked.

Among those plants was a [suit?] of
specimens intended to sustain a conjecture
of mine that your Thaspium aureum was
but a common form of your Thaspium 
cordatum. The plant is variable in its leaves
ternate & biternate, leaflets subcordate & cuneiform
at base, all forms with radical cordate leaves
on long petioles, fruit always the same.
I have since seen Mr. Leas plant in his herbarium.
It is one of the common forms of
what I have alway called Zizia cordata

Let me have your opinions in this matter
        