Cardamine bulbosa
from the link ☼
In bloom May 11 - June 20. This is the last of the prominant natural area spring herbs to stay in bloom. It is very common along the trail edges. Its white flowers are clustered at the top of slender stems that reach over 20 inches tall in June. A cluster of oval leaves is near the base and alternate lance shaped leaves occur farther up the stem. Young leaves of this genus are sharply flavored and useful in green salads. Mature leaves may be too bitter to eat. Grated roots mixed with vinegar make a good substitute for horseradish.