486 TRANS. ST. LOUIS ACAD. SCIENCE. 



N. palustbe, (Leys.) DC. Syst. H.— Sisymbrium palustre, Leys. 

 PI. Hal. 1761. 



Wet ground ; common. 



As a synonym of X. palustre, Watson's Index gives Sisymbrium palustre, L. 

 The New York Catalogue gives Nasturtium palustre, (Z,.) DC. But I have been 

 unable to find Sisymbrium palustre in any of Linnaeus' works, so I have followed 

 the synonymy given in DC. Syst. 



N. Armoracia, (L.) Fries. Fl. Scan. 1835.— Cochlearia Armoraeia, 

 L. Spec. 

 Escaped from gardens into wet places. 

 Barbarea vulgaris, R. Br, in Ait. Hort. Kew.— Erysimum Bar- 



barea, L. Spec. 

 Grain fields; infrequent. 

 Hesperis matroualis, L. Spec. 



Occasionally spontaneous around gardens; a few plants found in the lower part 

 of "The forks." 



Erysimum cheiranthoides, L. Spec. 



Woods; common. 

 Sisymbrium canescens, Nutt. Gen. 



Rocky places, infrequent. 



Along railroad south of Ames, and elsewhere. 



5. pinnatam, (Walt.) Greene, Bull. Calif. Acad, ii., is invalidated by 8. pinna- 

 ium, Barneoud in Gay, Fl. Chili. 



S. officinale. (L.) Scop. Cam. 2d ed. ii. 1772. — Erysimum offici- 

 nale. L. Spec. 



Roadsides and waste places; common. 

 Thelypodium pinnatifidum, (Mich.) Wats, in King's Rep. v. 

 1871. — Hesperis pinnatifidum. Mich. Fl. 

 Low woods ; frequent. 

 Brassica Sinapistrum, Boiss. Voy. Esp. p. 39, 1839-1845. 

 Fields and waste places; common. 



Specimens with sparsely hirsute pods were collected three miles east of Ames. 



B. alba, (L.) Boiss. Voy. Esp. p. 39. — Sinapis alba, L. Spec. 



A specimen was collected along the railroad, between Ames and the College, b\ 

 Mr. Corbett, and it has been reported by others. 



By the accidental omission of the authority in the 5th and 6th editions of the 

 Manual, this would appear to be one of Dr. Gray's species. 



B. nigra, (L.) Koch in Roehl, Deutsch. FJ.3d ed. iv. 1833.—- Sinapis 



nigra, L. Spec. 



Waste places; common. 

 Capsella Bursa-pastoris, (L.) Moench, Meth. 1794. — TJdaspi 

 Bursa-pastoris, L. Spec. 



Gardens and waste places; common. 



Lepidium Vieginicum, L. Spec. 



Woods and waste places; common. 



Plant more leafy, usually le-s branched, pedicels rather longer and pods some- 

 what larger than in the next; leaves cut-serrate: petals usually present; cotyle- 

 dons acCUtnbent. Prefers shady or moist pi; 



