eK 
17. Cauline leaves deltoid-ovate, 
cordate, long-petioled; plant 
onion-scented. Expected 
(Alliaria). 
17. Cauline leaves tapering to base, 
sessile or nearly so; plant 
odorless. (Also, blades of petals 
not raised above sepals; cauline 
leaves blunt-toothed)........+.... Cardamine 
8. Leaves deeply pinnatifid, lyrate, or pinnate. 
18. Petals 1 to 2 cm. long. Expected 
(Cardamine, Raphanus). 
18. Petals not over 8 mm. long, or absent. 
19. Ovary lance-oblong to round or ob- 
cordate. Expected (Teesdalia, Lepid- 
ium, Coronopus, Armoracia). 
19. Ovary slenderly linear. 
20. Wet or aquatic habitat; petals 
4° to 5 mm. longs. ..... 5. oe cee ie, NAStUGELUM 
20. Dry habitat; petals shorter...... Cardamine 
Barbarea 
1. Uppermost leaves coarsely and irregularly dentate; 
lyrate lower leaves with 1 to 4 pairs of lateral lobes. B. vulgaris 
1. Uppermost leaves lyrate-pinnatifid; lyrate lower 
leaves with 10 to 20 lateral lobes......cecccceeeeeeeee B. verna 
Barbarea vulgaris R. Br. Winter Cress 
Java Farm. Moderately abundant in old fields, in areas not yet 
covered by Rhus radicans and Lonicera japonica. Also along roadsides 
and around headquarters. Associate species: Draba verna, Stellaria media, 
Arabidopsis thaliana, Cerastium vulgatum. 
Ivy Neck. Moderately abundant in cultivated fields. Same associate 
species as as Java Farm. Higman 596. 
