* 
40 Botanical Excursion to the Mountains of North Carolina. 
number of genera which are either divided between North Amer- 
ica, Japan, and the mountain-region of central .Asia, or have 
nearly allied species in these countries or in the two former, is 
very considerable: in other cases a North American genus is re- 
placed by a nearly allied one in Japan, &c., as Decumaria by 
Schizophragma, Schizandra by Spherostemma, Hamamelis 
by Corylopsis, &c. Ihave elsewhere alluded to this«subject, 
and. shall snaiedaly consider it more bsaated on seen 
occasion. 
Our next degin seeuieaiiaies tien Grainne. ese to Crab 
Orchard on Doe River, in Tennessee, and up Little Doe River to 
Squire Hampton’s, where we took a guide and ascended the 
Roan. While ascending the Little Doe River, about three miles 
from its junction with the larger stream of that name, at one of 
the numerous places where the road crosses this rivulet, we 
again met with Carer F'raseriana. The plant did not appear . 
to be so abundant in this Tennessee locality as at the Grandfa- 
ther, but it is doubtless plentiful on the mountain side just above. 
We ascended the north side of the Roan, through the heavy 
timbered woods and rank herbage with which it. is covered ; but 
found nothing new to us, excepting Streptopus 1 asus 
in fruit; and among the groves of Rhododendron matimum 
towards the summit, we also collected Diphyscium foliosum, a 
moss which we had not before seen in a living state. In more 
open moist places near the summit, we found the Hedyotis 
ee serpyllifolia, still beautifully in flower, and the 
eum geniculatum, which we have already noticed. It was 
just sunset when we reached the bald and grassy summit of this 
noble mountain, and after enjoying for a moment the magnificent 
view it affords, had barely time to prepare our encampment be- 
tween two dense clumps of Rhododendron Catawbiense, to col- — 
lect fuel, and make ready our supper. The night was so fine 
that our slight shelter of Balsam boughs proved amply sufficient ; 
the thermometer, at this elevation of about. six thousand. feet 
above the level of the sea, being 64° Fahr. at midnight, and 60° 
at sunrise. ‘The temperature of a spring just under the brow of 
the mountain below our encampment we found. to be 47° Fahr. 
The Roan is welleeharnctoriet by Prof: Mitchell, as the easiest 
pF ced fe ees of z 3 ahs ere 
