CRUCIFERAE 



15. Camelina. 459. 



63 



1. Camelina sativa (L.) Crantz. 



Common over most of the state. Broken Bow; Crete; Lincoln; Pine 



Ridge; Valentine; Weeping Water. 



16. Draba. 460. 



Petals white or wanting, stems leafy only below. 



Pods glabrous. 1. d. caroliniana. 



Pods appressed-hispid. 2. D. michantha. 



Petals yellow, fading to whitish, notched. 3. D. nemorosa. 



1. Draba caroliniana Walt. 



Common all over the state. Fairbury; Lincoln; Nebraska City; Red 

 Cloud; Weeping Water; Valentine. 



2. Draba micrantha Xutt. 



In the western part of the state. Crookston; Minden; Xeligh; Red 

 Cloud; Valentine. 



3. Draba nemorosa L. 



In the western part of the state. Alliance; Ft. Robinson; Rushville. 



17. Sophia. (Sisymbrium.) 462. 



Seels in one row in each cell of the pod. 



Pods 15-25 mm. long. 1 mm. wide. 1; S. sophia. 



Pods 8-14 mm. long, 2 mm. wide. 3. S. intermedia. 



Seeds in two rows in each cell of the pod, pods 5-8 mm. long. 



2. S. pinnata. 



1. Sophia sophia (L.) Brrtton. 

 Sisymbrium sophia L. 



Ewing; Greeley; Ord; Springview. 



2. Sophia pinnata (Walt.) Britton. 



Chadron; Lincoln; Merriman; Ponca; Wahoo; Whitney. 



3. Sophia intermedia Rydb. 



Probably occurs all over the state. Weeping Water; Wild Cat Moun- 

 tains. 



IS. Arabis. (Including Turritis.) 643. 



Base of the stem leaves auricled, clasping. 

 Seeds in one row in each cell of the pod. 



Pedicels 2-4 mm. long, pods spreading. 1. A. dentata. 



Pedicels 6-12 mm. long, pods nearly erect. 2. A. hirsuta. 



Seeds in two rows in each cell of the pod. 



Pods erect, 5-8 cm. long. 4. A. glabra. 



Pods reflexed, 2-5 cm. long. 5. A. holboellii. 



Base of leaves narrowed, not clasping. 3. A. canadensis. 



1. Arabis dentata T. & G. 



In the eastern part of the state. Lincoln. 



2. Arabis hirsuta Scop. 

 Arabis ovata (Pursh.) Poir. 



In the eastern part of the state. Lincoln; Nebraska City; Neligh; 

 Ponca; Valentine. 



3. Arabis canadensis L. 



In the southeastern part of the state. Nebraska City. 



