2: dimery, dimerous, 2-merous. 3: trimery, trimerous, 3-merous. 4: tetramery, tetramerous, 4-merous. 5: pentamery, pentamerous, 5-merous
Kaynak: Merosity

the species flowers are tetramerous (composed of four identical parts) or sometimes dimerous Stamens are distinguishable and four in number.
Kaynak: Stemonaceae