Answer: Hosta would be my first choice for such an area. They are fire-safe plants, would love the acidic and humusy soil and will spread into attractive clumps of foliage as they mature. There are many to choose from - white margined, yellow margined, solid deep green, rippled green, etc., etc. These plants will lose their foliage at first frost but if you mulch over the soil after the leaves die, the roots will remain alive and new foliage will appear the following spring. Another option if you want an evergreen groundcover is Vinca minor. It loves the same conditions and reliably spreads to cover old stumps and lumps in the ground.
Best wishes with your garden!
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