170 THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 
In a very few days I shall look over my duplicate West Indian 
plants, & select for you such specimens as I have. There may 
be about a hundred, all of them determined by Sprengel. Of . 
European plants I might possibly send you a few not in your Herb. 
Can you send your desiderata? Perhaps I have a few from France. 
There is a man in Philadelphia who has a large collection of W- 
Indian plants I am told. You may hear of him from Le Sueur. 
The paper you published in the Journal of [the] Acad[emy of] 
Scien|[ces of] Philad{elphia|] [72] is very interesting & does you much 
credit—& would indeed honor a Hooker. Can you furnish me with 
specimens of those two rare plants? 
As I informed you, I have been much employed this winter 
in preparing for the intended exped[itio]n you will not expect me 
to give a very long account of my labours in Botany—I have 
looked at some things however. The genus Jungermannia has 
engaged much of my attention. I am gradually describing all the 
N. American species that come to hand & making drawings of the 
new or exclusively indigenous species. Your little book [74] is of 
great assistance to me but I occasionally differ from you in opinion 
which I know you have too much frankness to be offended with. 
I have been studying the splendid work of Hooker on the British 
Jungermanniae [33]. It isa delightful performance & I believe very 
accurate. You did me the favour some time since to send me some 
specimens of N. American Jungermanniae determined according to 
your book. There are yet a number of species I have not in my 
Herbarium. I should be greatly obliged to you if you would 
spare me specimens of them. They are as follows 
Jung. pallescens J. pauciflora J. resupinata 
— irtlobata — connivens — umbrosa 
— reptans — Ehrhartiana — quinquedentata 
J. exsecta 
— bipinnata 
— pubescens & oblonga 
Several of the above I may have, but they are of my own 
determination & I should wish to compare them with those thus 
named by you. I will add two or three other Hepatics in your 
book, specimens of which are desired by me, viz., Targionia 
orbicularis, Anthoceros carolinianus & jungermannoides. My 
