662 BOTANICAL INFORMATION. 
plants not seen elsewhere. On the Missouri, I found 
Castilleia occidentalis filling a small hollow, bordered with 
masses of Heliotropium Curassavicum. Again, near Laramie's 
Fork of the Platte River, some depressions are over- 
run with Lippia cuneifolia and Œnothera, n. 178, scat- 
tered amongst it. This GZnothera and No. 16* are doubtless - 
the two most elegant of the genus in North America; the - 
former is probably new, the corolla white and clear rose- 
colour, variegated with deep purple spots. It has a ligneous - 
prostrate stem. ; 
In localities, shaded by some high bank of earth, on exsie- ? 
cated loam, and even soda crusts, grow dense masses of the | 
Asterea, n. 115, bearing a great number of stems which were | 
remarkably level-topped; generally it was surrounded by 
dense carpets of the small pretty Chrysopsidea, n. 116. _ 
The prevailing white colour among the flowers arises 
from Achillea Millefolium : as Calliopsis bicolor, with Helian- 
thus tubeformis, Stanleya, divers Solidagines and Ranunculi 
produce the yellow. Blue is rare, and only presented by Jr? 
Pentstemon and Lithospermum; red, by Dodecatheon and 
Cleome, is likewise rare. 
Cnas. A. GEYER. 
Dresden, Oct. 14, 1845, 
.* This Œnothera also grows on somewhat saline clayey ue in a very 
small locality, near Scots’ Bluffs. 
