Leaf epidermal micromorphology of five members of tree legumes, i.e. Acacia auriculiformis, Bauhinia variegata, Butea monosperma, Cassia fistula, and Cassia siamea, has been investigated. The epidermal cells in each case are irregular in shape. The stomata are hypostomatic, anomocytic and/or paracytic with distributional frequency from 7.2 - 12.9 stomata/mm2. The trichomes are nonglandular, uni-cellular, straight or curved; in some cases both long and short forms are observed. These leaf epidermal characters may provide some new light in taxonomical consideration of the taxa.