Geranium carolinianum Linnaeus. Phen: Mar-Jun (and sometimes later). Hab: Fields, roadsides, lawns, pastures, gardens, disturbed areas. Dist: MA, MI, WY, and BC south to FL, CA, and n. Mexico (and introduced in various places in the Old and New World).
Origin/Endemic status: Native
Taxonomy Comments: Varieties are sometimes recognized, with two in our area: var. carolinianum, with the inflorescence diffusely corymbiform (because of long upper internodes), mostly 4-12-flowered, and pubescence of the stem mostly < 0.5 mm long, and var. confertiflorum, with the inflorescence a compact corymb (because of notably short upper internodes), mostly 5-25-flowered, and pubescence of the stem mostly >0.75 mm long.
Synonymy: = Bah, Fl2, Il, K3, K4, Mex, Mi, NcTx, NE, NY, Pa, RAB, S, Tn, Tx, Va, W, WH3, WV, Aedo (2012); > Geranium carolinianum L. var. carolinianum – Ar, C, F, G, GrPl, K1; > Geranium carolinianum L. var. confertiflorum – C, F, G, GrPl, K1; > Geranium sphaerospermum Fernald – F