1. Fabaceae(Mimosoideae)

2. Mimosoideae Consists of herbs, shrubs, trees, or vines, with spines sometimes present

3. Roots Sometimes have a symbiotic association with nitrogen-fixing bacteria, which induce formation of root nodules

4. Leaves Usually compound - pinnate, bipinnate, trifoliolate, rarely palmate sometimes simple or unifoliolate usually spiral basal pulvini often present leaflet folding responses (e.g., Mimosa spp.) Generally stipulate, sometimes stipellate

6. bisexual, sometimes unisexual

8. Fruit Generally a legume sometimes indehiscent, winged (samara), drupe-like or divided into transverse partitions (loment)

9. Anther Longitudinal, rarely poricidal in dehiscence

10. Gynoecium Unicarpellous Superior ovary 1 (rarely 2 or more) carpel 1 locule Style and stigma are solitary Marginal placentation Ovules are anatropous, bitegmic Nectaries often present

11. Androecium Stamens are numerous, distinct and basally fused