Enumeration of Plants of the Rocky Mountains, — 237 
another, continues during the months of July and August, con- 
stituting a rainy season. 
The principal object of my journey being the collection of 
may here very properly conclude this sketch of the gen- 
eral features of scenery, atid climate. 
The accompanying list of plants prepared from my collections, 
and notes, by Prof, Gray and Dr. Engelmann, will serve to 
give a precise view of the botany of this region, par- 
ticularly of the alpine district, to which my attention was spe- 
cially directed. 
Travelling over a path so ably investigated by early explorers, 
T have still been rewarded for my labors by the discovery of 
several interesting novelties, as well as by adding quite a number 
of alpine plants, well known in the Old World, to our North 
American Flora. : é 
Should circumstances prove favorable, it is the intention of the 
writer to continue these observations during the coming season, 
over a wider section of country lying to the west and south of 
the investigations of the past season. 
Enumeration of the Plants ; by A. Gray, aided by notes of Drs. 
Exercise and money’ ik upon ‘the habitats, &c., by Dr. 
ARRY. . " 
€ numbers are those under which the specimens have been distributed. Their 
one followed, excepting a few transpositions to bring allied species together, 
When it could conveniently be done.]} 
1. Erigeron grandiflorum, Hook. Fl. Bor-Am., t. 123} var. elatius. 
“In moist shady a near the upper limit of the arborescent growth. 
Rays ti ith pink or purple.” The specimens (a span to a foot in 
j um- 
the s 
mit ; in rth, and the cauline leaves 
tof the Rocky Mountains much phe north, San oh tha wc 
tion Stenactis on the one hand, and with the following 5 cies on the 
other, notably with the form named £, alpinum var. pa 8 by Lede- 
4 Wie pe ay he true, with black-woolly involucre, like 
nls. Seadiark pay amg apes a Rocky Mountains 
farther north. “Near the base of the bare alpine ridges.” ; 
- _ 3. Varieties of the last (one with blue, the other with nearly white 
= far less pubescent. 
a 1 rent forms; the last 
No. 5 is a var. discoi- 
= Danice” acre, L., var. Just the E. Drebachensis of the Flora 
AERTS ve have trom Labender 
| ” ern Bellidiastru lia ri Nutt, A plant of the plains. 
