48 ESSAYS. 
we found an arborescent tetramerous species of Prinos (in 
fruit only), with large and membranaceous ovate leaves. 
The same species has been collected on the Pokono Moun- 
tains, in Pennsylvania by Mr. Wolle, and on the Catskills by 
Mr. S. T. Carey. We should deem it the P. levigatus of 
Pursh (not of Torrey, Fl. Northern States), on account of 
the solitary and subsessile fertile flowers, as well as the 
habitat, were not the flowers of that species said to be hex- 
amerous. 
In damp, very shady places high up the Negro Mountain 
we saw an Aconitum not yet in flower; and on moist rocks 
near the summit, obtained a few fruiting specimens of a Saxi- 
fraga which was entirely new to us. Ina single very secluded 
spot on the north side of the mountain, near the summit, the 
rocks were covered with a beautiful small Fern, which proves 
to be the Aspleniwm Adiantum-nigrum of Michaux, the A. 
montanum, Willd., an extremely rare plant. It is certainly 
distinct from the A. Adiantum-nigrum ; being not only a 
much smaller and more delicate species (two to four inches 
high), but the fronds are narrower, the pinne ovate and 
much shorter, 83-5 parted, with the pinnule toothed or in- 
cised at the apex. 
The Veratrum parviflorum, Michx., is of frequent occur- 
rence throughout this region, but was not yet fully in flower, 
so that our specimens were not collected until near the end of 
July. The plant is excellently described in the Flora of 
Michaux, where it is, probably with justice, referred to Vera- 
trum rather than to Melanthium; since the divisions of the 
perianth (yellowish-green from the first) are wholly destitute 
of glands, and only differ from Veratrum in being stellate, 
and tapering at the base. I may here remark that the name 
Melanthium must undoubtedly be retained for WZ. Virgini- 
cum and M. hybridum. Some years since, in rearranging the 
North American species of this family, I followed Roemer 
and Schultes in adopting the genus Leimanthium of Willde- 
now, without considering that Melanthium was established by 
Clayton and Gronovius on MW. Virginicwm, and thus taken 
up by Linnzus, with the addition of a Siberian plant, which 
