
          you think best.

The best, though not cheapestway would be by Adams
Express, which connects with Greens Express, who have an
Agency here. I have several times sent to Dr. Gray boxes
or packages by that line. If you know of a cheaper
and as safe way, I would of course prefer it.

What do you say about Sagittariae? It is unfortunately
so difficult to obtain the ripe fruit, and that appears
to me to be of such great importance in determining
the identity or difference of species. I have now been
enabled to compare ripe fruit of the European P. [sagitt?]
and find it certainly very distinct from ours. The stamins
offer also an unlooked for character. In some species they
are subulate and smooth in others shorter, more or less conic
and glandulous. I am so far certain only of 5 species
in the U. States, but my collection is limited and there
may be many which I have not yet got. It appears
difficult too to identify the species of the different [?].
[crossed out: Is S. gra[?]] Is S. simplex actually always [dioecious?]? Then
it can not be the plant I have always taken for it.

The [Sagittarie?] offer a fine field, but I am
afraid they can not be studied satisfactorily but in the
field in the fresh specimens and a large number 
so as to observe all forms and variations.

I remain very truely, my dear sir
Yours

G. Englemann

Prof J. Torrey
Princeton, NJ

Can you satisfactorialy distinguish [?] tinctoria
and G. [?]? Here both [?] appear to
have so many intermediate forms, which defy
the attempt to class them.
        