338 
under the Rhododendrons. Veratrum viride and Alnus viridis mark the 
gullies. Much of the summit prairie flora has doubtless beén destroyed 
by the large herds of cattle, horses, and sheep, which are every sum- 
mer sent to the mountain top for pasture. Canby and Sargent re- 
joined the party upon the mountain on the 17th, and several days 
were then devoted to excursions in various directions upon the sum- 
mit and flanks of the ridge. In these excursions were collected 
Trautvetteria palmata, Thalictrum clavatum, (abundant on the flanks 
of the mountain), Diphylleia cymosa, Ilex monticola, Saxifraga Carey- 
ana (growing in the shade of overhanging rocks,) Rides rotundifolium, 
Sedum ternatum, Sambucus pubens, Diervilla trifida, (but not D.; 
sesilifolia), Phacelia fimbriata (an exquisite little species allied to 
the P. Purshit of the western States), Castilleia coccinea, Streptopus 
amplextfolius, Streptopus roseus and Paronychia argyrocoma, the lat- 
ter upon the rocks at Eagle Cliff. 
Many very interesting species were collected upon the southern 
flank of the mountain, in and below the belt of Adies Frasert. 
Near springs and rills, not far below the summit, Cardamine Cle- 
matitis abounds. ‘This species was many years ago collected by Rugel 
in the Smoky Mountains, and was sent by him to Shuttleworth, who 
distributed it undertheabovename. It isenumerated in Watson’s In- 
dex, but has not been described.* Other plants collected on this slope 
were Saxifraga erosa (abundant in wet places), a single plant of the 
rare Aconitum reclinatum, not yet in flower, and a lily which Watson 
has recently named Lilium Grayt, probably too near to LZ. Canadense. 
Of the arboreal vegetation, the Adses Fraseri mixed with A. alba 
reach the highest, comprising most of the forest above 5500 feet. 
These trees clothing all the summits of the Black Mountains doubt- 
less suggested their name, their hue at a distance being dark and 
sombre. Therg is some reason to believe that this forest has been 
~ encroaching upon the bald portion of the summit, but as it is now 
being largely cut for fire-wood and fencing, any such encroachment 
is likely to be checked, perhaps too effectually. Below the firs the 
deciduous trees begin with Acer spicatum, Crategus tomentosa, var. 
* This desideratum may here be supplied. . 
CARDAMINE CLEMATITIS, Shuttleworth in coll. distrib. Rugel. Species distinct- 
issima, glaberrima, semi-subpedalis e rhizomate tenero ; foliis radicalibus prima- 
riis reniformibus subintegris, czeteris trisectis (segmentis rotundatis nunc angulatis, 
terminali majori reniformi-cordato seu angulato-trilobo) vel supremis oblongatis 
trilobis, petiolo basi dilatata insigniter sagittato-appendiculato, auriculis subulatis ; 
racemo brevi laxo ; petalis albis (lin. 3 longis) calyce plus duplo longioribus ; siliqna 
angusto-lineari compressa in stylum sat longum attenuata ; stigmate parvo.—Wet 
ground along streamlets in the higher Iron or Smoky Mountains of North Carolina 
and Tennessee, collected in 1844 by Rugel, and about the same time by Buckley. 
A specimen from Buckley was by me confounded with C. rotundifolia, and is the 
only authority we know of for attributing to that species occasionally trisected 
leaves, as is done in the Manual of the Botany of the Northern States, An im- 
perfect original specimen from Shuttleworth was mixed up with a Florida species, 
intermediate between Cardamine and Nasturtium, first received from Leavenworth 
without fruit, and referred in the Supplement to the first volume of Torrey & Gray’s 
Flora to WV. officinale ; it was afterwards received from Buckley, then from Shut- 
tleworth (coll. Rugel), first as Cardamine curvisiligua, Shuttl., and again as Nas- 
_turtium stylosum, Shuttl. Proc. Am. Acad, xx. 45. — A. G. 
