Maximum transpiration occurs in

Maximum transpiration occurs in Mesophytic plants.
Mesophytes are terrestrial plants that are neither adapted to particularly dry nor particularly wet environments.
They usually have broad, flat, and green leaves, an extensive fibrous root system to absorb water; and the ability to develop perennating organs such as corms, rhizomes and bulbs to store food and water for use during drought. These conditions allow the maximum rate of transpiration.