mxmm 
OF THE UPPER MISSOURI. 205 " 
Calystegia spithamaea , Pursh. Council bluffs to Fort Pierre. 
Convolvulus argentea , Pursh. Bad Lands, Fort Union, and Yellowstone. 
Ipomea leptophylla , Torr. I have seen this plant in but one locality along the Mis¬ 
souri; Bear creek near “ Bad Lands.” But in the sandhills on Loup fork, along 
the Niobrara, and around Fort Laramie, it is very abundant. 
Cuscuta glomerata , Choisy. Abundant on sandy bottoms of Missouri. 
Cuscuta Gronovii, Willd. Woodlands on Missouri. 
Cuscuta decora , Choisy. Bottoms of Missouri. 
SOLANACEiE. 
Solanum Jieterandrum , Pursh. Fort Pierre to Yellowstone. 
Solanum nigrum , Michx. Not rare on the sandy bottoms of Missouri. 
Solanum triflorum , Nutt. Very abundant in prairie dog villages on Upper Missouri. 
Solanum Carolinense , Linn. Along Missouri to Council bluffs. 
Physalis lanceolata , Michx. Sandy bottoms of Missouri to Fort Pierre. 
Physalis viscosa , Linn. Sandy bottoms of Missouri to mountains. 
Androcera lobata , Nutt. Very abundant about old trading houses, along old roads, 
and in prairie dog villages on Upper Missouri. 
Datura stramonium , Linn. Introduced as high up the Missouri as Council bluffs. 
GENTIAN ACEriE. 
Gentiana alba , Muhl. Fort Union. 
Gentiana affinis , Griesb. Black hills, Sept. 21st. 
Eustoma Russelianum , G. Don. Around saline lakes in the sandhills of Loup fork 
and Niobrara. Very abundant. August. 
APOCYNACEJE. 
Apocynum cannabinum , Linn. Abundant on low bottoms of Missouri to mountains. 
Apocynum androscemifolium , Linn, Black hills, September 4th. 
ASCLEPIADACEiE. 
Asclepias macranihera , Torr. Not rare on the moist prairies of the Upper Missouri, 
Loup fork, and Platte valley; July 16th. 
Asclepias incarnat'a, Linil. Moist places on the Loup fork and Platte. 
Asclepias speciosa , Torr. Fort Pierre, &c. 
Asclepias purpurascens , Linn. Council bluffs. 
Asclepias pubescens. Forts Pierre and Clark. 
Asclepias Meadi , Torr. Loup fork, sandhills. 
Asclepias tuberosa , Linn. Mouth of Big Sioux, and in Platte valley. 
Asclepias verticillata , Linn. Abundant on prairies, Fort Pierre. 
Anantherix viridis , Nutt. Platte valley, Loup fork, July 16th. 
