Helleborus purpurascens - purple-flowered Christmas rose or hellebore
Helleborus purpurascens - Often the first flowers can be seen low to the ground in December (usually before the new foliage appears), but they continue to open as the red-spotted stems grow, right through until early spring. A variable but very pretty deciduous clump-forming perennial that makes excellent groundcover in partial shade.
8 Fall-Blooming Native Plants You'll Love for Adding Late-Season Color to Your Garden
Looking for a hardy daisy? Helenium is a beautfiul fall flower that blooms yellow, red, or orange! More fall flowers: http://www.bhg.com/gardening/flowers/perennials/fall-garden-plants/?socsrc=bhgpin091113helenium#page=7