98 Mr. Tuckerman, on some Plants of New England. 
approach of any thing that has been found. To continue this 
enquiry for a moment, is there reason to admit that Alchemilla 
alpina and Sibbaldia procumbens are inhabitants of the New 
England mountains, as Pursh has said? .On the one hand, all 
our botanists have been unable to find them; while, if memory 
was the authority, we might conjecture that the Alchemilla was 
Potentilla tridentata, and the Sibbaldia, P. minima. ‘These are 
found. On the other hand, the recent discovery of Aspidium 
aculeatum, after it had been lost almost forty years, in the very 
mountains where Pursh gathered it,* seems to encourage us to 
further search for these interesting plants. Dryas integrifolia 
may also be mentioned, which, though found by Peck, and also 
seen by Bigelow, Fl. Bost., edit. 3, p. 219, and by Pursh, has 
never since occurred to any botanist. So remarkable a plant 
could hardly, it would seem, be mistaken by any one, much less 
by the eminent botanists who have given it a station in our Flora. 
If any where, this may possibly grow on some part of the high-. 
est rocky region of Mount Washington, all of which is gone 
over by the way which Peck and the earlier botanists took, 
while but a small part, and that the least promising, is traversed by 
the new path. Some alpine plants are singularly local and rare; 
as is Arbutus alpina at the White Mountains, found by Dr. Rob- 
bins in 1829, but since that time only by Dr. Gray and myself in 
September last. In 1840, I ascended the great spur of Mount 
Washington by the old way, with Dryas in mind, but was un- 
successful in finding it. This region is so vast, barren, and diffi- 
cult of examination, and the plant doubtless so local, that it may 
be very long before we can pronounce positively whether it is 
yet an inhabitant of our mountains. 
Unirechantis NT emoeDrA, 2 SOL wpe distichis dichotome 
a a. ee: eae 
vv MAW ESS 
a 
culatis, caleare conico, labio superiore integro palato duplo longi- 
ore, pedunculis fructiferis erectis. Koch, Syn. p. 579, Richards. 
pp. p. 2, Gray in Ann: Lyc. N. Y., Hook. Bor. Amer. yoni 
U. Millefolium, Nutt. MSS.in herb. Greene. 
‘Hab. Tewksbury, B.D. Greene, Esq.; Plymouth, in an inun- 
dated swamp near the West Pond, with Rinmiensd found only 
he Aspidium. was s found o on the lower part of the Chin of Mansfield. Carex 
xatilis grows about three thousand feet higher Up: It is improbable that we 
shall ever come — to the “ hemlock woods,” where Pursh found the Ca- 
rex of his Flor 
