The influence of evapotranspiration on recession hydrographs were analyzed using a dimensionless form of a fundamental equation with the term of evapotranspiration based on the saturated-unsaturated flow model reported in the previous paper. The influence of evapotranspiration are indicated by the dimensionless parameter E_*. The dimensionless recession coefficient λ_* decreases with time when E_* is 0. With a large value of E_*, λ_* increases inversely in the latter half of the recession stage. When E_* is a relatively small value, λ_* is nearly a constant value with a wide range of the discharge rate, and its hydrograph shows a nearly-strait line on a semi-logarithm graph. The recession coefficient of real scale i is proportional to the hydraulic conductivity and the sine value of the slope gradient, and is inversely proportional to the slope length and effective porosity when λ_* is of the same value. E_* is proportional to the slope length and inversely proportional to the soil thickness, hydraulic conductivity, and the tangential value of the slope gradient under the same evapotranspiration intensity. These relationships agree with the observations of discharge in the recession stage on three small watersheds in weathered-granite mountains.