OF THE UPPER MISSOURI. 205 
Calystegia spithamaea, Pursh. Council bluffs to Fort Pierre. 
Convoivulus argentea, Pursh. Bad Lands, Fort Union, and Yellowstone. 
Ipomea leptophylla, Torr. Ihave scen 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 Gronovit, Willd. Woodlands on Missouri. 
Cuscuta decora, Choisy. Bottoms of Missouri. 
SOLAN ACE. 
Solanum heterandrum, 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. 
GENTIANACE. 
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. 
APOCYNACE. 
Apocynum cannabinum, Linn. Abundant on low bottoms of Missouri to mountains. 
Apocynum androsemifolium, Linn, Black hills, September 4th. 
ASCLEPIADACE#., 
Asclepias macranthera, Torr. Not rare on the moist prairies of the Upper Missouri, 
Loup fork, and Platte valley; July 16th. 
Asclepias incarnata, Linn. 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. 
