166 THE ROCK SPLEENWORTS. 
are many stations for it in the eastern States that await 
a discoverer, 
Asplenium Bradleyt. 
It was once suggested that Asplentum Bradleyi might 
be a hybrid between the ebony and mountain spleen- 
worts, but the idea seems more ingenious than plausible 
since a well developed specimen has as much individuality 
about it as any other member of this group. Like the 
others, it loves the rocks and is often able to thrive in full 
sunshine but is at its best in shady places. 
The fronds grow in tufts from a short and nearly erect 
rootstock and often reach a length of ten inches. They 
are rather narrow, slightly broadest at base and taper up- 
ward. The pinnules nearest the apex are oblong or ovate 
and serrate, those next below are deeply serrate while 
those at the base are again pinnate with oblong, blunt, 
sometimes toothed pinnules. The basal pinne have 
broad bases and blunt tips and 
are slightly stalked. The stipe 
and rachis are dark brown and 
the sori are as in the other 
A spleniums. 
This species ranges from 
New York to Georgia and Miss- 
ouri. It is supposed to keep 
pretty close to the limestone, 
Fruiting pinnz of but has been found on sand- 
Pe ES eae stone in Missouri and Ken- 
tucky and on gneiss in Maryland. As yet it is not 
known to be very abundant anywhere but will no doubt 
be found in many more localities. There is much differ- 
