Heuchera americana Linnaeus. Section: Heuchera. Subsection: Heuchera. American Alumroot. Phen: Apr-Aug. Hab: Rocky forests, rock outcrops, particularly where soils are subacidic to circumneutral. Dist: CT and NY west to s. ON, n. IN, s. IL, and sc. MO south to c. GA, c. AL, n. MS, n. LA, and ne. TX.

Origin/Endemic status: Native

Taxonomy Comments: Heuchera americana var. heteradenia may warrant recognition, and is likely the basis of some eastern records considered to be H. hirsuticaulis; further study is needed.

Other Comments: H. americana is the most widespread species of Heuchera in e. North America. Within the range of H. caroliniana, H. americana is nearly absent.

Synonymy ⓘ: = C, Pa, Va; = Heuchera americana L. var. americana – Ar, FNA8, K1, K3, K4, NE, NY, Tn, Schuette et al (2018), Wells (1984); = n/a – Il; < Heuchera americana L. – RAB, Tat, W; > Heuchera americana L. var. americana – F, G, WV; > Heuchera americana L. var. brevipetala Rosend., Butters, & Lakela – G, NcTx, Tx, Rosendahl, Butters, & Lakela (1936); > Heuchera americana L. var. calycosa (Small) Rosend., Butters, & Lakela – Rosendahl, Butters, & Lakela (1936); > Heuchera americana L. var. heteradenia Fernald – F; > Heuchera americana L. var. subtruncata Fernald – F; > Heuchera americana L. var. typica – Rosendahl, Butters, & Lakela (1936); > Heuchera calycosa Small – S, S13; > Heuchera curtisii – S, S13; > Heuchera lancipetala Rydb. – S, S13

Show in key(s)

Show parent genus

Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACU
• Eastern Mountains and Piedmont: FACU (taxonomic split from wetland indicator species)
• Great Plains: FACU (taxonomic split from wetland indicator species)
• Midwest: FACU (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACU (taxonomic split from wetland indicator species)

Heliophily ⓘ: 4