Q.Where will you place the plants which contain two cotyledons with cup shaped thalamus?

The realisation that no single character (like stamen count) deserves more weight than any other sparked the natural-classification approach in France; the first such scheme, based on OVERALL similarity across many characters, was presented by Antoine Laurent de Jussieu in 1789. The best-regarded and most widely followed natural system was proposed by English botanists George Bentham (1800-1884) and Joseph Dalton Hooker (1817-1911) in the three-volume Genera Plantarum (1862-1883), describing 202 families, 7,569 genera and 97,205 species. Seed plants split into three classes: Class I Dicotyledonae (two cotyledons, reticulate venation, tap root, tetra-/pentamerous flowers), itself split by corolla type into Sub-class Polypetalae (free petals) - further split by thalamus SHAPE into Series Thalamiflorae (dome/conical thalamus, superior ovary), Disciflorae (disc-shaped thalamus, superior ovary) and Calyciflorae (cup-shaped thalamus, inferior/half-inferior ovary) - Sub-class Gamopetalae (united petals) - split by ovary position/carpel number into Series Inferae, Heteromerae and Bicarpellatae - and Sub-class Monochlamydeae (incomplete flowers, apetalous or an undifferentiated perianth, sometimes both whorls absent). **Cl …