Mesophytes are terrestrial plants which are adapted to neither a particularly dry nor particularly wet environment. An example of a mesophytic habitat would be a rural temperate meadow

Meadow

A meadow is a field vegetated primarily by grass and other non-woody plants . The term is from Old English mædwe. In agriculture a meadow is grassland which is not grazed by domestic livestock but rather allowed to grow unchecked in order to make hay...

, which might contain Goldenrod, Clover, Oxeye Daisy, and Rosa multiflora.

Mesophytes make up the largest ecological group of terrestrial plants, and usually grow under moderate to hot and humid climatic regions.
Mesophytes do not have any specific morphological adaptations, however they usually have broad, flat and green leaves.
Mesophytes do not have any special internal structure.