Helleborus niger L.—Christmas rose. FAMILY: Ranunculaceae—the Buttercup Family. The genus Helleborus is recognized by showy flowers of white, green, or purple; sepals: 5, large, petaloid; petals: none; stamens: numerous, the outer 8-10 modified into staminodes; pistils: usually 3 or 4; style: erect, slender; fruit: a follicle; leaves: alternate, palmately cleft. (source: UPENN dept of agriculture)
This flower is blooming in my front yard. I had no idea it was so interesting close up. I especially like the staminodes. The petaloid sepals are nice too.