68 ESSAYS. 
divaricata ; Cacalia reniformis ; Silphium perfoliatum ; the 
larger form of Coreopsis auriculata, with nearly all the leaves 
undivided; the glabrous and narrow-leaved variety of C. seni- 
folia (C. stellata, Nutt.) which alone occurs in this region ; 
Melanthium Virginicum, which is avery handsome plant, with 
the flowers cream-colored when they first expand ; and Stée- 
nanthium angustifolium, Gray, which is doubtless the //elonias 
graminea of the “ Botanical Magazine.” We also made an 
excursion to the White Top in Virginia, twenty miles north- 
west from Jefferson ; a mountain of the same character as the 
Roan, but on a smaller scale, and with the pasturage of its 
summit more closely fed. We were not rewarded, however, 
with any new plants, and the cloudy weather obscured the 
prospect, which is said to be very extensive. On our return, 
we found Cedronella cordata, Benth., nearly out of flower, 
with runners often two or three feet in length. Mr. Bentham 
has omitted to mention the agreeable balsamic odor of the 
genus, which in our plant is much less powerful than in C. 
triphylla. We saw plenty of Cimicifuga Americana, but 
the flowers were still unexpanded. Our endeavors to obtain 
the fruit of Cimicifuga cordifolia (common in this region) 
were likewise unsuccessful; without which it is not always 
easy to distinguish this species from C. racemosa. The leaf- 
lets of the former are frequently very large, the terminal ones 
resembling the leaves of the Vine in size and shape, as re- 
marked by De Candolle; in one instance we found them ten 
inches in diameter; but they are generally much smaller and 
more divided, apparently passing into the former species. 
The number of the ovaries does not afford marked characters, 
since the lowest flowers of C. racemosa sometimes present 
two, while the upper ones of C. cordifolia are almost always 
monogynous. 
We were too early in the season for several interesting 
plants, especially Composite, and did not extend our re- 
searches far enough south to obtain many others; such as 
Hudsonia montana, which appears to be confined to Table 
Mountain, Rhododendron punctatum, Stuartia pentagyna, 
Philadelphus hirsutus, Silene ovata (which Mr. Curtis found 
