| A | B |
| complete | calyx + corolla + androecium + gynoecium |
| incomplete | one or more whorls absent |
| perfect | has both androecium and gynoecium |
| imperfect | missing either androecium or gynoecium |
| connation | fusing within a whorl |
| adnation | fusing between whorls (for example, sepals and petals fused together |
| dioecious | separate sexes |
| dichogamous | stamens and pistils reach maturity at different times |
| genetic self-incompatibility | genetic self-incompatibility |