Heuchera americana, or American alumroot (also called Coral bells or Rock geranium), is a small (under 2 ft. high and wide) evergreen perennial native to eastern and central North America while also ranging into Ontario, Canada.

American alumroot has lobed semi-palmate green, purple, or brown leaves that may or may not be veined or marbled.

Loose racemes of insignificant green to cream flowers up to 1 meter tall bloom June to August.

Found naturally in rock crevices and ledges of bluffs; it has a preference for acidic soil.

[6] The American alumroot has a lot of tannin which makes it very astringent and good for fixing dyes.