What is the Difference between Hypogynous, Perigynous and Epigynous Flowers
Hypogynous
1. Ovary is superior
2. Calyx, corolla and androecium occur below the ovary.
3. Thalamus is flat, convex or conical.
4. Thalamus is free from ovary wall.
5. The whole gynoecium is visible from outside.
Perigynous
1. Ovary is superior
2. Calyx, corolla and androecium occur from thalamus that surrounds the ovary.
3. Thalamus is cup shaped.
4. Thalamus is free from ovary wall.
5. The whole gynoecium may or may
not be visible from outside.
Epigynous
1. Ovary is inferior.
2. Calyx, corolla and androecium
occur above the level of ovary.
3. Thalamus is flask shaped.
4. Thalamus is fused with the ovary wall.
5. Only style and stigma are visible from outside.
| Hypogynous | Perigynous | Epigynous | |
| 1 | Ovary is superior | Ovary is superior | Ovary is inferior. |
| 2 | Calyx, corolla and androecium occur below the ovary. | Calyx, corolla and androecium occur from thalamus that surrounds the ovary. |
Calyx, corolla and androecium occur above the level of ovary. |
| 3 | Thalamus is flat, convex or conical. | Thalamus is cup shaped. | Thalamus is flask shaped. |
| 4 | Thalamus is free from ovary wall. | Thalamus is free from ovary wall. | Thalamus is fused with the ovary wall. |
| 5 | The whole gynoecium is visible from outside. | The whole gynoecium may or may not be visible from outside. |
Only style and stigma are visible from outside. |