aoe Ae : , & 
a P44 
82 Prof. Kunze on some Férhs of the United Statés. 
Ea at only : a variety of L, apus or apodum has lately 
d. 
sLossuM.—American oe of O. vulgatum are ‘not 
distinct from European small species with an elliptical 
acute leaf as Miiie as the spike, . eae by Beyrich at Ebenezar, 
probably belongs to O. nudicaule ( O. elliptiewm, H. and Grev. )— 
A specimen of O. bulbosum, Mich., or more properly O. crotalo- 
phoroides, Walt., collected by Drum mond in Louisiana and com- 
municated by A ’ Gray, agrees exactly with O: tuberosum, Hook. 
from Talcahuano.— 0. pusillum, Nutt., is entirely unknown» in 
. een and has net been mentioned by Greville and Hooker. 
Bot. Mise., iii. 
Borrycuium.—T he different ser still 5 Sn to be more 
accurately distinguished. B. gracile, Pu has been united 
with B. virginicum by Greville and ‘Hooker. (1. ~~ B. dissee- 
tum, Muhl., is unknown to me. 
Osmunpa. —A. Gray has already proved entity of O. Clay- 
toniana, L., with O. interrupta. O. spectabilis, W., and O) re- 
ALT. L.; cannot be separated any better.  Ruttall has —<v 
pronounced them ‘scarcely distinct.” 
_ Potyropium.—More correct observations are required rua 
ing the species which resemble P. vulg: “ 
americanum, Hook., (P. virginianum, L.,) differs from ‘te 
‘European form by a narrower and more elongated frondy 
rower lobes separated by wider sinus, the lowest being longer or 
at least not shorter than the following ones, and the sori being 
always nearer the margin than in the European plant. I have 
not met with any American specimens entirely «pane Pn with the 
true P. vulgare of the old world.—P. Scoulert,H. and Grev., Te. 
Fil. 56, is ineorrectly united with the very distinct P. Californi- 
sagt Kaulf., in Hook. FJ. Bor. Am: P. intermedium is unknown 
- : it appears to approac cach P. Cambricum, Desv., —— 
~ form ey ot P. Cambricum, L., and of the gardens, a common fern 
about the on ee Sea, but may constitute a separate 
species.—P. incanum, L., appears to belong exclusively to. thie 
southern states, 1 have seen coeclaaai fommshaniniane: (Fligel! 
~and Louisiana and Florida (Rugel!).*— connec 
(Mich.,) not distinguishable from P. Phegopteris, L., extends as 
far north as Newfoundland and -Labrador.—P. Dryopteris, L., 
was sent to me from Labrador.—P. ealcarewm, Sm., widely dif- 
fering from the last, is enumerated by Hooker : [have not seen 
any American specimens of it. 
orHocHLANa dealbata, Kunze, (Cheilanthes dealbata, 
ii, 675, Nuttall, ii, 253, N. pulchella, Kze., in Mohl and ‘Sch 
. tend., Bot. Zeitg. 1843, No. 37,) must be introduiged here. | 
te 
eh 
a 
eg itll i i Tale SS 
* Grows as rohan the Wabash in sihaeadene si we c 
et “ ie ail ~~ 
