There are anything up to 20 species, sub species and varieties of Mouse-ear/Cerastium sp in the UK. They are all very similar to Common Chickweed but hairy rather than having a single line of hairs down the stem. They are low growing, typically 10-20cm tall, straggly and scramble over and through grass and other low growing vegetation. It has opposite pairs of oval leaves around a thin stem. The flowers are small, white and with 5 incised petals very similar to chickweed.
Due to their hairiness they are better cooked than eaten raw in a salad.