1 



CATALOGUE OF THE 



sessUiflorum, Nutt. 



C. & S. 



Henderson, Peoria and Kankakee comities, and 

 southward. Scarce. 



At Oquawka the typical form, growing in the 

 edges of ponds, flowers in May and June, while 

 a dwarf, much branched form, common on sand 

 bars and low banks of the Mississippi, flowers 

 until killed by frost in October. 



obtusum, Nutt. 



Menard county, Hall. Rave. 



palustre, DC. 



Low grounds. Common. 



lacustre, Gray. 



Wabash, Schneck ; Sangamon, Hall: Hancock, 

 Mead ; and northward. Frequent. 



Armoracia, Fries. 



Escaped from gardens. Frequent. 

 DENTARIA 



laciniata, Muhl. 



Rich woods. Common. 

 CARD AMINE 



rhomboidea, DC. 



Along streams. Common. 



var. purpurea, Torr. N. 



Kankakee, Hill : Chicago, Munroe : Winnebago, 

 Bebb. 



hirsuta, L. 



Low grounds. Common. 



var. sylvatica, Gray. C. & S. 



Hancock, Mead ; and southward. 

 ARABIS 



Ludoviciana, Meyer. C. & S. 



Banks of the Mississippi near Warsaw, Mead ; 

 Fulton county, Wolf ; Menard, Hall : common 

 in waste places about Salem, Marion county, 

 Bebb : St. Clair, Brende'. 



lyrata, L. N. 



Sandy barrens and rocky hills. Kankakee and 

 Cook counties and westward. Common in Hen- 

 derson. 



dentata, T. & G. 



Rich woods along streams. 



hirsuta, Scop. 



Dry woods and rocky hills. 



laevigata, DC. 



Rocky hillsides. Infrequent. 



Canadensis, L. C. & N. 



Hancock and Menard counties and northward. 



hesperidoides, Gray. 



River banks. Will county, Monroe : Peoria, 

 Brende 1 ; Henderson : and southward. Scarce. 



perforata, Lam. 



N. 



Rocky hillsides. Winnebago county, Miss Nor- 

 ton ; Elgin, Kane county, Vasey. 



Drummondii, Gray. 



N. 



Ro^ky hillsides. Lee county near Dixon, Vasey: 

 Winnebago, Bebb. 



BARBAREA 



vulgaris, R. Br. N. 



McHenry county, Vasey ; and about gardens at 

 Augusla, Mead. 



ERYSIMUM 



cheiranthoides, L. N. 



Banks of streams. Hancock county, Mead, and 

 Henderson : Kankakee, Hill : Winnebago, Bebb. 



Rare. 



asperum, DC, 



var. Arkansanum, Nutt. 



Barrens, Mason and Cass counties, Mead, Wolf. 



Rare. 



SISYMBRIUM 



officinale, Scop. 



Roadsides and waste places. A common weed. 



canescens, Nutt. 



Throughout the State. Frequent. 



Sophia, L. 



Roadsides in a German settlement, Stephenson 

 county, evidently a chance importation from 

 "faderland" — Bebb. 



BRASSICA 



Sinapistrum , Boissier. 



Fields and waste places. About Chicago, Kan- 

 kakee, Mt- Carmel, &c. Scarce. 



nigra, Gray. 



Fie'ds and waste places. Frequent. 

 DRABA 



brachycarpa, Nutt. S. 



Wabash county, Schneck. 



cuneifolia, Nutt. S. 



Credited to Illinois in Gray's Manual. 



Caroliniana, Walt. 



Dry prairies and barrens. Common. 



var. micrantha, Gray. 



Winnebago county, Bebb. 



