Mouse-ear n. (Bot.) (a)
The forget-me-not (Myosotis palustris) and other species of the same genus.
A European species of hawkweed (Hieracium Pilosella).
Mouse-ear chickweed, a name of two common species of chickweed (Cerastium vulgarium, and Cerastium viscosum).
Mouse-ear cress, a low cruciferous herb (Sisymbrium Thaliana). All these are low herbs with soft, oval, or obovate leaves, whence the name.