| A flower is hypogynous if the perianth and androecium are inserted around the base of the gynoecium. |
| In the genus Mitella the androecium can exceptionally be more variable, ranging from obdiplostemonous to haplostemonous arrangements. |
| Primordia of the corolla, androecium, and gynoecium arise in three successive whorls. |
| Growth of the corolla and androecium show a dorso-ventral asymmetry that also results in zygomorphy. |
| From each plant one randomly chosen, fresh flower was dissected under a binocular microscope to separate the corolla, androecium and gynoecium. |
| Only at a fairly late developmental stage does the corolla finally overtop the androecium and gynoecium. |
