Sibbaldiopsis tridentata (Aiton) Rydberg. Mountain-cinquefoil, Three-toothed Cinquefoil, Mountain White Potentilla, Wine-leaf Cinquefoil, White Sibbaldia. Phen: Jun-Aug; Jul-Sep. Hab: Grassy balds, crevices of rock outcrops at high (rarely moderate, or northwards at low) elevations, high elevation glades, sometimes locally abundant. Dist: Greenland and NL (Newfoundland) west to NT, south to e. MA, nw. NJ, ne. PA, NY, n. MI, ne. IL, ne. IA, and SD, and disjunctly southwards in the mountains to w. VA, w. NC, ne. TN, and ne. GA (at progressively higher elevations southward).
ID notes: Showy in flower, and also in leaf from late summer on, when previous year's leaves turn a rich burgundy red (younger leaves staying deep green). Though superficially appearing herbaceous, S. tridentata is really an evergreen sub-shrub.
Origin/Endemic status: Native
Syn: = FNA9, Il, K1, Mi, NE, S, Tn; = Potentilla tridentata Aiton – C, F, G, GrPl, Pa, RAB, W, WV; = Sibbaldia retusa (O.F.Müll.) T.Erikss. – Eriksson et al (2015), Feng et al (2017), rejected name; = Sibbaldia tridentata (Aiton) Paule & Soják – K3, K4, NY, Va, Paule & Soják (2009)