157 [ 237 ] 



Pentsiemon albidum, (Xutt.) var. (?) Hills, Hiipankiitey prairie, Upper 

 Missouri, May 17. Stem 6 to 10 inches hicjh ; lower leaves lanceolate, 

 acute, entire ; upper ones shar])ly denticulate, glabrous, lanceolate ; 

 flowers half an inch in diameter, three-fourths of an inch long; calyx 

 glandularly pubescent ; segments ovate lanceolate, very acute, and 

 somewhat mucronate ; corolla violet, tubular, campanulate; segments 

 ovate, nearly equal ; pubescent externally ; glabrous internally ; ste/il 

 Jilameiit, with an interrupted glandular pubescence on one side, about 

 halfway down ; summit simple. 



Pentstemon gracile, (Nutt.) Low situations, in prairies near Fort Pierre ; 

 June 19. 



Chelone glabra. Swamps in woods ; September 2. 



Mimulus Geyeri, (Torr.) Annual ; every part glabrous, except the pe- 

 duncles ; stem diffuse, creeping; leaves roundish ovate, nearly en- 

 tire, or obscurely repand-toothed, somewhat cordate ; the lower ones 

 abruptly contracted into a short petiole; upper ones sessile; pedun- 

 cles axillary, solitary, puberulous, scarcely longer than the leaves ; 

 calyx ovate, 5 ribbed; teeth short, unequal, (upper one largest;) 

 flowers (small, yellow?) villous on the inferior part of the throat. 

 Fresh wwter springs. Devil's lake, August 1. 1 have an imperfect 

 specimen of this species collected by Doctor James in JiOng's expe- 

 dition, probably towards the Rocky mountains. It is allied to M. 

 alsinoides, (Dougl ,) but is stouter, the peduncles and petioles much 

 shorter, and the calyx more unequal. M. flnribnada differs in its 

 strongly dentate leaves, and nearly equal calyx. Lindley also describes 

 the plant as " patentipilosus;" but my specimens from Hooker are quiet 

 glabrous. 



Gratinla Virginica, (Linn.) Near St. Louis : roadsides. 



Veronica scnCfllata, (Linn.) Swamps about Devil's lake; August 3. 



Veronica peregrina, (Linn.) Swamps, Jacques river ; July 6 — fr. 



Monniera rottuidiJoUa^ (Michx.) Wet places in the prairies near Jacques 

 river; July 6. 



Gerardi.a pitrinirea, (Linn.) Prairies near Devil's lake; August 8. 



Gerardia tenui/olia, (Valil.) With the precedins;. 



Ortliocitrpiis strictus^ (Renth.) Prairies from Jacques river, north to Red 

 river ; July 6. Probably, as Hooker suggests, only a variety of O. 

 luteus, (Nutt.) 



Castilleja sessilijinra., (Pursh.) Eiichionia grandijlor a, {^ui[.) Prairies 

 about Council Bluffs ; May 5. 



Pediciilaris lanceolata. (Michx.) Low woods. Devil's lake, August 6. 



Pcdicidaris Canadensis, (Linn.) Black Snake hills, Upper Missouri; 

 April 12. 



Orobanche fasciculata, Nutt. — Hook., Fl. Bor. Amer., 2, p. 93, t. 170.) 

 Arid hills of the Missouri, near the Great Bend ; June 6. 



VERBENACE^. 



Verbena uriicifolia, (Linn.) B.mks of Devil's lake; July 28. 



Vei'bena stricta, (.Michx.) Banks of lakes and rivers; prairies of Missouri; 



July 7. 

 Verbena braclensa. (Michx.) Prairies of Upper Missouri ; a weed in the 



marmots' habitations. 



