A Revision of the Genus Clematis of the United States. 127 
10. C. erispa, Linn. 
var. Walteri, Gray. 
11. C. lasiantha, Nutt. 
12. C. pauciflora, Nutt. 
13. C. Drummondii, T. & Gr. 
14, C. Virginiana, L. (C. Pennsylvanica, Donn., C. Catesbyana, 
Pursh.) 
var. bracteata, DC. (C. holosericea, Pursh.) 
15. C. ligusticifolia, Nutt. 
var. brevifolia, Torr. & Gr. 
var. bracteata, Torrey. 
var. Californica, Watson. 
GEOGRAPHICAL DISTRIBUTION. 
Taking now the species in the order in which I have placed them, 
and in what I take to be the natural relations to each other, I will give 
the geographical distribution of each.* 
No. 1. Clematis verticiliaris, DC., is the most widely dispersed of 
all the species. Fron. the mountains of Carolina, on the south, it fol- 
lows the line of high land northeast, having recorded stations in Penn- 
sylvania at the foot of the Blue Ridge; at Wilmington, Delaware; 
along the Delaware river, at Phillipsburg, near the Water Gap, Plain- 
field, and at Preakness mountain, New Jersey; Haverstraw, North 
Salem, Pine Plains and Fishkill, New York; in Connecticut (rarely); 
at Johnson, Rhode Island, and thence to Maine. From here the range 
is westward through New Hampshire and Vermont; at Montreal, 
Canada; northern and western New York, and along the Great Lakes, 
being recorded at St. Croix Lake, Wisconsin. It reaches latitude 54° 
in British America, and is found in the Rocky mountains at Fort Ellis, 
Montana; Teton mountains at 11,000 feet, and Flat Head river in 
northern Idaho; in the Wahsatch and Uinta mountains of Utah at 
7,000 to 9,000 feet; and in northern California about Cape Mendiciao. 
It is quite rare in most of the eastern stations, but becomes more com- 
mon toward the west. It is readily seen from the list of stations how 
it extends from the Atlantic to the Pacific, living in the highlands 
almost entirely, from as far south as latitude 37°, to north and west as 
* In the following account I have availed myself of some of the many local and state 
floras which have been published from time to time, and am indebted to the many corre- 
spondents in various parts of the country who have favored me with lists of the species 
found in their various localities. 
