145                          [ 237 3
CRUCIFERaE.
Nasturtium sinualum, (Nutt.) Missouri river, sand-bars; April 23—not
in fruit.
Nasturtium palustre, (D. C.)   Margin of swamps near Jacques river ;
July 9.
Arabis Canadensis, (Linn.)   Shady woods, Upper Missouri ; April 29.
Arabis dentata, (Torr. and Gr.)    Shady  ravine near Council  Bluffs;
April 30.
Arabis laevigata, (D. C.)    Woods opposite St, Louis ; April 19.
Caidamine Ludoviciana, (Hook.)    Margin of swamps, St. Louis, &c. ;
April 19.
Dentaria laciniata, (Muhl.)    Rocky banks of the Missouri ; April 4.
Sisymbrium canescens, (Nutt.)   St. Louis and Fort Pierre, Upper Mis-
souri; April and June.
Erysimum asperum, (D. C.)   Hills, Upper Missouri and Devil's lake;
June and July.
Erysimum cheiranthoides, (Linn.)    Banks of rivers, Upper Mississippi ;
August.
Stanleya pinnatifida, (Nutt.)    Slaty hills near  L'Eau-qui court river;
May 23.
Draba Caroliniana, (Walt.)    St. Louis and Council Bluffs; April 30.
Draba brachycarpa, (Nutt.)    Grassy hills about St. Louis ; April 16.
Lepidium rttderale, (Linn.)   Fort Pierre, Missouri valley; June 9.
Capsella Bursa-pasloris, (Moench.)    Upper Missouri ; June 14.
CAPPARIDACEaE,
Cleome integrifolia, (Pursh.)    Naked banks of rivers, Upper Missouri ;
July 9.
Pvlanisia graveolens, (Raf.)    Gravelly hills and sandy banks of the Up-
*-per Missouri ; June 19.
POLYGALACEaE.
Polygala Senega, (Linn.)   Borders of ponds, Upper Missouri.
Polygula verticillata, (Linn.)    Prairies about Devil's lake ; August 1.
Polygala alba, (Nutt.)—P. Beyrichii, (Torr. and Gr.) Roots thick, throw-
ing up numerous stems, which are 6 to 8 inches high ; leaves scarcely
a line wide ; spike somewhat larger than those of polygala verticil-
lata; lobes of the caruncle half as long as the hairy seed. Gravelly
banks of the Missouri, near the banks of L'Eau-qui-court river;.
May 23. A rare species, of which I for the first time saw specimens
in this collection.
VIOLACEaE.
Viola delphini folia, (Nutt.)   Prairies near Council Bluffs ; May 5.
Viola Canadensis, (Linn.)   Prairie groves, from near the mouth of Ver--
million river, Upper Missouri, north to Devil's lake; May 10.
Viola cucullaia, (Ait.)   Prairies near Council Bluffs;. May 15,
10