155 [ 237 ] 



GENTIANACEiE. 



Gentiana detonsa, (Fries.) Boggy prairies about Devil's lake ; July 30. 

 Corolla, deep aziiro blue. 



Gentiava pvbcrula. (Michx.) ^V,rtheln part of (he elevated gras?y plain 

 between (lie Misbonri and the JMissit^sippi ; August to October. 



Gentiana propinqna, (Rich.) Fertile prairies between Shayen oju and Red 

 rivers; July ^0. 



Gentiana affinis, (Griscb.) Fertile prairies, Devil's lake; August b. 



Gentiana quivqveflora, (Lam ) Northern part of the prairie region ; Sep- 

 tember and October. 



Gentiana crinita, (Frnel.) Moist prairies, St. Peter's river : September ^0. 



Gentiana saponaria, (Linn.) Hills and prairies, La Hontan river; Sep- 

 tember 27. . . ^ 



Gtntiana Anc/rewsii. (Griseb.) Wet prairies, Upper Mississippi ; Septem- 

 her lo. 1 am suspicious that this species is not sufficiently distinct 

 from the G. saponaria. 



POLEMONIACE^. 



Phlox divaricata, (l-inn.) Banks of the Missouri, to the Platte; April 8. 

 Collomia linearis, {Nim) Upper Missouri ; June l3-/r. 

 Navaretia (Gilia) intcrtextn, (Hook.) Dry swamps in the prairies east of 

 Devil's lake ; August 8. 



CONVOLVULACE^. 



Convolvulns stans. (Michx.) Grassy ravines, Jacques river; June 8. 

 Evolmdns argentens, (Pursh., iNutt.) Gravelly hills of the Missouri, near 

 Fort Pierre; June 28. 



BORAGINACE^E. 



Hdiotrnpium cvrassavicvm, (Linn.) Stony, wet borders of Jacques river ; 

 July 16. 



Litfiospcrn.nm incisum, (Lehm.— Hook., Fl. Bor. Amer , 2, p. 87, (. 165.) 

 L. longijlura, (Spreng.) &c. High prairies near Council Bluffs; 

 April 30. 



Lithospernntm canescens, (Lehm.) Dry prairies, Black Snake hills; 

 April 17. 



Lithospirmnm Mandanense, (Hook., Fl. Bor. Amer., 2, p. 88 and 166.) 

 Upper Missouri. Root thick, black, pereuni.il ; stem and leaves canes- 

 cemly puliesceut, (the pubescence appressed ;) leaves li inch long, 

 lanceol.ite linear ; flowers solitiiry; axillary in the upper part of the 

 stern; calyx of 5 linear seguieiiis as long or longer than the tubular 

 (Vtllowibh) corolla; border of the corolla slightly spreading ; (?) lobes 

 roundish, one-third the length of the tube; crenate eroded ; nuts tur- 

 gidly ovale, with a few impressed dots towards the base; stames as 

 lon:i as the tube of the corolla. 



Myosotis chorisiana, (Cham.— Hook., 2, p. 83.) Dry swamps in the prai- 

 ries about Devil's lake; August 1. 



