THE CORRESPONDENCE OF SCHWEINiTZ AND TORREY 139 
Gymnostomium repens, at first sight, looks much like an 
Orthotrichum, & was mistaken by me for a species of the latter 
genus in an advanced state. Sprengel returned it as an Ortho- 
tric.—I believe anomalum. Do you not think Anoectangium fili- 
forme, quite distinct from A. ciliatum? Bridel makes it a variety & 
Schwagrichen does not notice it. Didymodon I erroneously called 
Dicranum rigidulum, though I knew better. It is a variable 
species, at least in height, which may be the cause of its not always 
resembling the European D. rigidulum. Really I must own 
that I hardly think the moss you called D. virens, the same as 
the European specimens I have under this name. 
My Jungermannia nodifolia, Sprengel calls J. ciliaris! & 
your J. platyphylloidea he says is J. platyphylla—by the way is 
not your name objectionable? Your Blasia pusilla he calls Jung. 
pinguis—You may think it presumption in me to differ in opinion 
from two such celebrated botanists as Sprengel & yourself, but 
this plant though I suppose it to be a Jungermannia seems to 
me quite distinct from pinguis. Will youexamineitagain? Thelo- 
trema cinereum Swtz. Sprengel calls “Pyrenula (!) enteroleuca*. 
ye . 
“ Evernia prunastri’’ Sw. is Borrera furfuracea Spr. 
No. 152 Herb. Cooley “ Cetraria lacunosa aut nova’’ Sw: Sprengel 
says is ‘‘ Nephroma resupinata 8 papyracea” 
‘*Cenomyce phyllophora’”’ Sw. is C. gonorega var. pleolepis Spr. 
In a letter I lately received from Prof Sprengel, in some re- 
marks on some plants I sent him, he says—*‘ Your fungus, no. 108, 
found in your herbarium has afforded me great joy, as this isa 
most rare plant which has been named by Willdenow, Blandowia. 
Its place is between Anthoceros & Targionia. B. striata W. Berl. 
Magaz.? Cfr. Micheli Nov. Gen t. 4, f. 5.—Laetitia singulari se 
afferit!’’ Now there is something I do not understand in all this, 
for I can not be mistaken when I say the specimen is the same 
which I sent to you, exactly as I sent it to Sprengel, called by 
you Isaria antheriformis. There is certainly no resemblance in it 
to either Targionia or Anthoceros, & is most certainly a fungus— 
It grew I think in the damp paper of my herbarium. 
—— I have just received from the Author (Agardh) the Ist 
volume of the Species algarum [3]; comprising the Fucoideae. It 
is a valuable work. 
