
          Ansd. April 20th                  West Chester, Penn.  April 13, 1835


 My Dear Sir,


                      Your valued favor of the 9th, was duly
 received; & you will please accept my thanks for its contents,
 as well as for the further information kindly offered, respecting
 the [residue?] of our Cyperaceae.  I shall be greatly obliged by your
 furnishing me, at your earliest leisure, the names of the fol-
 lowing species, as determined in your Monograph: they having
 been detected here, since the publication of my catalogue, viz


 1. Scirpus palistris - I suppose you make this also, an Eleocharis
 2.  S. planifolius - Do you continue this under Scirpus?
 3.  S. autumnalis - Do you make this a Scirpus, or [illegible?] I suppose
                                you make it [illegible]& therefore all your Scirpi
                                will have [hypogymous S?].


 The above are all the additional species found in this county since
 the catalogue was printed, - except , perhaps, S. brunneus, of which
 I am not certain.  Are you familiar with it?  Is it a good species?
 I will not advert to the plants noticed by you, as contained
 in the first pages of my catalogue.


 1.  Callitriche - I had already satisfied myself of the truth of your remarks,
                              and had adopted the name [vervance?]; adding var.intermedia,
                              as in your Flora -[illegible].


 2.  Veronica, Beccabunga & Anagellis.  I am now satisifed to have both;
                         but when I published, I had not seen the real Anagellis
                         I made the two species out of the Beccabunga - or as
                         Mr. Schwinitz calls it, Americana; for he thought it
                         distinct from the European Beccabunga.  It however
                         looks very like a specimen I have from England.
                         The V. Anagellis is rare here; but I have compared it with
                          both French & English specimens, & have it also from Ken-
                          tucky.  Dr. Pickering has also examined our plants & has no doubts.


 3.  Iris virginica - I have long since satisfied myself that ours is the
                                  I. versicolor - having collected the true virginica in Delaware.


 4.  Scirpus trichodes - of my catch.  I must reexamine.  I have not yet taken
                                            it up; but I suspect it is not Muhlenberg's plant - which
                                            however, we have.


 5.  Scirpus ciliatifolius - You showed me, long ago, that this was only S. capillaris.
                                               I cannot make out your new name, as written.  It
                                               looks like Tricholostylis.  Is that it? if so, undo                                          [derivative?] Is it your name?  Please let me have it correctly, with the
 derivation.

        