Soybean (Glycine max) belongs to the family Fabaceae . According to the source material, the floral formula for this family is characterized by:

1. Symmetry: Zygomorphic, represented by the symbol % .
2. Sexuality: Bisexual, represented by ⚥ .
3. Calyx: Five sepals which are united (gamosepalous), denoted as K(5) .
4. Corolla: Five petals showing vexillary aestivation (one standard, two wings, and two fused keels), denoted as C1+2+(2) .
5. Androecium: Ten stamens in a diadelphous (9+1) arrangement, where nine filaments are fused into one bundle and one remains free, denoted as A(9)+1 .
6. Gynoecium: Monocarpellary with a superior ovary, denoted as G1 .