Botanical Excursion to the Mountains of North Carolina, 18 
os ke ab naturalized in the time of Pursh. We did not 
} lobata, which Michaux first met with in this vi- 
meadeak which Pursh, as well as later botanists, found in vati- 
ous parts of the valley. Passing the town of Lexington in the, 
evening, we arrived at the Natural Bridge towards morning, 
where we remained until Monday, and had an opportunity of 
botanizing for a short time before we left. On the rocks, we 
found plenty of Asplenium Ruta-muraria, Sedum ternatum, 
and Draba ramosissima with ripe fruit: in the bottom of the 
ravine, directly under the stupendous natural arch, (the point 
Which affords the most impressive view of this vast ohaoea ,) we 
collected specimens of Heuchera villosa, Michx., in fine flower 
on the 28th of June; although, in the higher mountains of North 
Carolina, where it also abounds, the flowers did not appear until 
near thé end of July. This’ species is excellently described by 
Michaux, to ‘whose account it is only necessary to add, that the 
petals are very narrow, oe Sieg: like sterile filaments. Although 
a smaller plant than Hf. Americana, the leaves are larger, and 
vary considerably in the depths of the lobes. It is both the HZ. 
villosa and H. caulescens of Pursh, who probably derived: ‘the 
latter name ‘from the strong elongated rhizoma, often projec 
and appearing like a suffrutescent stem, by which the plant is 
attached to the rocks; since he does not describe the scape as 
leafy, ‘nor is this at all the case in the original specimens. The 
H.caulescens «. of Torrey and Gray’s Flora,* with the syno= 
nym, must also be united with H: villosa, which in that work is 
chiefly described from specimens ‘collected by Dr. Short in Ken- 
tucky, where every thing seems to grow with extraordinary lux- 
oe the specimen from Mr. Curtis, the only one from the mountains of North 
Carolina which these authors had before them, and which they correctly enough 
onsidered as the H. caulescens of ene is in too. Sahin Wis a state lost 
from age most of the shaggy rusty hairs which so copiously clothe she petioles and 
lower part of the scape ; ead the thse being smaller and more sharply lobed, it 
Was ‘as not recognized as the same species with the luxuriant Kentucky plant; but 
and large 
partly confounded with a different r-flor species, the H. cau- 
lescens Be Gray, 1 c. from Buncombe county: The Jatrer (H. Curtis, 
Torr. & Gray, ined. has: fs quite as large of Americana, spat+ 
, 
- petals (apparenily desing A heey PE Mee — the _— or -_ 
calyx ; and the Ar which are | 
Foes bom aid of i its Gentneress however, is Geeriod, te sonpionatie nolertet 
