
          views respecting it and apparently giving up the
 opinion he had formed on the authority of Dr. Boott.
 I sent him specimens both of the Cardamine rotundifolia
 & Arabis rhomboidea - & he admits that "it is quite
 clear that the two are distinct"; though they appear
 to be of the same genus - as De Candolle has made them.
 The fact is I believe, that those naturalists who have
 considered the two plants to be the same, have never
 seen the true Cardamine rotundifolia.  I anticipate
 much pleasure & profit, from a correspondence with
 so able & accomplished a Botanist as Dr. Hooker; and
 I have been exceedingly gratified by learning fro him
 that my package was interesting & acceptable.


     About 4 weeks ago, I had occasion to take
 an excursion on business, into the lower parts
 of Virginia - about 2.6 miles west of Norfolk;
 & although the botanical season was nearly
 over, I saw and collected several interesting
 articles, & some of them quite new to me.
 I was particularly struck with two species
 of Eupatorium - viz. E. [fomiculacum?] & E. [coron..?]. I
 also found there, the Tipularia Nutt. & Asarum virginicum,
 (neither however, in flower) - also [Presunthis virgata?], [Verbisina?]
 and several not satisfactorily determined.  It is
 a most capital region for Botanizing, if one was there
 at the proper season; & I shall feel strongly tempted
 to visit it, some future June, if I can afford it.
 You have kindly offered to send specimens of some in-
 teresting plants: & I can assure you that it would be
 difficult to do a more acceptable thing.  We are par-
 ticularly fond of authentic American specimens.
       With great respect & esteem,
             Yours truly,  Wm Darlington


 Dr. Jn. Torrey, N.Y.

        