OF THE UPPER MISSOURI. 187 
RUTACEZ. 
Xanthoxylum Americanum, Mill. Woody bottoms and islands of the Missouri, to 
Fort Pierre. 
Ptelia trifoliata, Linn. Around Council bluffs. 
ANACARDIACE. 
thus glabra, Linn. Council bluffs, White river valley. 
Rhus copallina, Linn. Abundant in Missouri and Kansas. 
Fhus toxicodendron, Linn. Abundant in woody places to the mountains. 
Rhus aromatica, Ait. Along Missouri. 
Rhus trilobata, Nutt. First makes its appearance about latitude 43°, and occurs abun- 
dantly on sterile hills to the mountains. 
VITACEZ. 
Vitis cordifolia, Michx. 
Vitis riparia, Michx. Banks of Missouri, Bellevue, N. T. 
Vitis indivisa, Willd. Big Sioux river. 
Ampelopsis quinquefolia, Michx. Very common in woody bottoms throughout the 
country, but grows most luxuriant in the rich woods from the mouth of the 
Missouri to Big Sioux, where it often so clothes old dry trees that they seem still 
alive. 
RHAMNACEZ. 
Ceanothus Fendlert. Laramie mountains. 
Ceanothus velutinus, Douglas. Black hills. 
Ceanothus sanguineus, Pursh. Mouth of White river. 
Ceanothus ovalis, Bigelow, var. pubescens. Common on the cretaceous hills below 
Fort Pierre; also in the sand hills of Loup fork, on the Niobrara river. 
Rhamnus lanceolatus, Pursh. Council bluffs. 
CELASTRACEZ. 
Celastrus scandens, Linn. Along Missouri to Fort Union. 
Huonymus atropurpureus, Jacq. Woody bottoms to Fort Union. 
Huonymus Americanus, Linn. Mouth of Platte. 
SAPINDACE. 
Staphylea trifolia, Linn. Council bluffs. 
Aesculus glabra, Willd. Missouri bottoms to Big Sioux river. 
Acer glabrum, Torr. Laramie mountains, August 24th. 
Acer dasycarpum, Ehrhart. Bellevue, Nebraska. 
Acer rubrum, Linn. Highest limit on Missouri, latitude 42°. 
Acer saccharinum, Wang. Limestone regions of Kansas and southern portion of 
Nebraska. 
