
          Can you my good Sir cast any light on Pteris pedata, 
Linn. Jns.[?] Smith places it in Kaulf. [Kaulfuss] genus "Cassebeera", the
veins of which are said to be forked. While Prels in his
Tentamen Pteridographia[e], has it in his genus "Litobrochia", the veins 
of which are angularly reticulated, now you would oblige me
by examining one of you U. [United] States specimens of the species, and let
me know what kind of venation it has. I am almost cornered
for the want of authorities to refer to, the want of Raddi
or some general work on Brasilian [Brazilian] ferns is much felt.
also Gaudichaud in Freycinets voyage on the plants of the 
Isles of the Pacific is a great considertaion. Thank you 
for Agardh's monog. [monograph] on Pteris, it has been of great use [to me?]
I [crossed out: am] have now before me the Asplenium tribe, the French
have figured a great number of the Pacific species, but their
works are not here to consult, and I believe I am only
figthing along for to get myself ultimately into difficulties.

Pray how are you progressing with the Oregon and 
Californian plants? Have never yet received Hookers 
Species Filicum (part 5th) but hope it is on the way.

with kind regards for yourself and family, [added: and] with the
expectation of hearing from you soonI remain dear

Sir

Yours respectfully,
Wm [William] D. Brackenridge.
        