This foot-wide spreading groundcovery clump of foliage is an edible herb,
but which one:

http://www.paghat.com/images/tasty_apr.jpg

The woman I got it from said it's "variegated cress" but I can't find a
garden cress species with such ornate serated leaves. It has an almost
peppery taste.

-paghat the ratgirl

--
"Of what are you afraid, my child?" inquired the kindly teacher.
"Oh, sir! The flowers, they are wild," replied the timid creature.
-from Peter Newell's "Wild Flowers"
See the Garden of Paghat the Ratgirl: http://www.paghat.com/