<p>Seed dispersal mechanisms and their associated structural adaptations are crucial for maintaining biodiversity and ecological balance. Plants have evolved strategies to disperse seeds, including producing winged seeds capable of autorotational flight. The aerodynamic properties of wind-dispersed seeds exhibit remarkable efficiency in passive flight, making them an important subject of study for ecological and engineering applications. This study investigates the flight mechanics of three Brazilian Savanna species—<i>Banisteriopsis laevifolia</i>, <i>Peixotoa tomentosa</i>, and <i>Qualea grandiflora</i>—by analyzing their autorotational descent through experimental testing in a controlled environment. Key aerodynamic parameters, including terminal velocity, angular velocity, coning angle, wing loading, and power coefficient (C_P), were measured, calculated, and compared with theoretical predictions from rotor systems aerodynamics. The results confirm that wing loading strongly predicts descent behavior, and these seeds operate near-optimal rotor efficiency, akin to engineered rotor systems. The CP obtained for the studied samarids were 0.458 for <i>B. laevifolia</i>, 0.567 for <i>P. tomentosa</i>, and 0.587 for <i>Q. grandiflora</i>. These values compare favorably to conventional wind turbines, which typically range from 0.45 to 0.48, and approach the theoretical Betz limit of 0.593, highlighting the aerodynamic efficiency of these seeds as natural rotors, such as wind turbine applications.</p>