192 



Peiitsteiiioii albidus, Nutt. White Beard-tongue. 



On prairies from the Missouri valley eastward, and in 

 the Black Hills. 



Peiitsteiiioii g-racilis, Nutt. Slender Beard-tongue. 



Common on prairies from the Missouri valley east- 

 ward, and in the Black Hills. 



Peiitsteiuoii g-raiidittonis, Nutt. Large Flowered Beard 

 tongue. 



On dry knolls and banks of ravines throughout the state. 



Pentsteinon glaber, Pursh. Smooth Beard-tongue. 



On low prairies from the Missouri valley westward. 



Pentsteinon angiistifolius, Pursh. Pale Beard-tongue. 

 Near Hot Springs in the Black Hills, rare. 



Pentstenion Janiesii, Benth. James' Beard-tongue. 



On table-lands near Hot Springs in the Black Hills. 



Collinsia parviflora, Dougl. Small-flowered Collinsia. 

 On dry hill sides in the Black Hills. 



Miniulns ringens, L. Monkey Flower. 



Along streams in the Minnesota and Sioux valleys. 



Miniulns Janiesii, T. & G. James' Monkey Flower. 



In bogs and swamps in the Minnesota valley and in 

 the Black Hills. * 



Miniulns liiteus, L. Yellow Monkey Flower. 



In damp, shady ground in the Black Hills near Lead 



City. 

 Monniera rotundifolia, Michx. Round-leaved Hedge^ 



Hyssop. 



Herpestris rotundifolia^ Pursh. 



In shallow pools and on muddy shores from the Mis- 

 souri valley eastward, and in the Black Hills. 



Ilysaiitlies g-ratioloides, (L.) Benth. False Pempernel. 

 Ilysanthes riparia^ Raf: 



On muddy shores from the Missouri valley eastward. 



