Longflower alumroot carries pale yellow tubular flowers rather than the tiny bells most heucheras produce, and they hang from wiry stems held well above the leaves. Heuchera longiflora is a native perennial growing 8 to 14 inches tall and 12 to 18 inches wide in part shade to full shade, hardy from Zone 4 through Zone 8.
Bloom comes in late spring on stems that reach a foot or more above a low mound of green foliage. Hummingbirds feed at the tubular flowers, which are shaped for exactly that.
The leaves are rounded and softly lobed, forming a compact mound that stays neat without cutting back.
This is an uncommon species in the trade, native to wooded slopes and bluffs in the southeastern uplands. It handles dry shade and drought once established, and it wants soil that drains, since winter wet is what kills heucheras. Deer leave it alone.