Family CRUCIFERA# yp! 
Brunswick; Clay Center; Johnson; Lincoln; Pawnee City; Plainview; 
St. Paul. 
5. Sisymbrium. 448. 
Pods less than 2 cm. long; pedicels 2 mm. long; flowers 3 mm. long. 
1. S. officinale. 
Pods 5 cm. long or more; pedicels 6-8 mm. long; flowers 6 mm. long. 
2. S. altissimum. 
1. Sisymbrium officinale (L.) Scop. Hedge Mustard. 
Common in the eastern part of the state. Lincoln; Wahoo. 
2. Sisymbrium altissimum L. - Tumbling Mustard. 
Common over most of the state. Cowles; Ewing; Franklin; Grand 
Island; Newark. 
3. Sisymbrium loeselii L. 
In an alfalfa field near Arcadia. 
6. Sinapis (Brassica). 449. 
Beak as long as rest of pod, fruiting pedicel about 10 mm. long. Z 
1. S. alba. 
Beak shorter than rest of pod, pedicels about 5 mm. long. 
2. S. arvense. 
1. Sinapis alba. L. White Mustard. 
Reported from Weeping Water. 
2. Sinapis arvense L. Wild Mustard. 
Frequent as a weed in grain fields. Douglas county; Lincoln. 
7. Brassica. 451. 
Pods less than 2 cm. long, appressed, on pedicels less than 5 mm. 
long. 1. B. nigra. 
Pods over 2 cm. long, spreading, on pedicels 2-5 cm. long. 
2. B. juncea. 
1. Brassica nigra (L.) Koch. Black Mustard. 
A common weed, especially in oat fields, over most of the state. 
Kearney; Nemaha; O’Neill; Ponca; Red Cloud; Wahoo; Weeping 
Water. 
2. Brassica juncea (L.) Cosson. 
A common weed, especially in grain fields. 
8. Barbarea. 451. 
1. Barbarea barbarea (L.) MacM. 
Barbarea vulgaris R. Br. 
Accidental in cultivated ground. Callaway. 
§. Roripa (Radicula). 451. 
Terrestrial or marsh plants; leaves pinnatifid; petals yellow. 
Plants glabrous or nearly so. 
Styles 2-3 em. long. 1. R. sinuata. 
Styles 1 mm. long or less. 
Flowers 2-3 mm. broad; pedicels 2-4 mm. long. 2. R. obtusa. 
Flowers 4-6 mm. broad; pedicels 6 mm. long in fruit. 
3. R. palustris. 
Plants more or less hirsute. 4. R. hispida. 
Aquatic plants; leaves pinnate; petals white. 5. R. nasturtium. 
