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Micranthes forbesii (Vasey) Bush. Section: Micranthes. Common name: Forbes's Saxifrage. Phenology: May; June Habitat: Moist shaded sandstone cliffs, especially north-facing and often in seasonal seepage. Distribution: Sw. WI, se. MN, and e. IA south to s. IL and se. MO.

Origin/Endemic status: Native

Taxonomy Comments: Based on morphology and habitat, M. forbesii appears to be a 'good taxon' at some rank and readily separable from M. pensylvanica; it needs additional study.

Synonymy ⓘ: = Il; = Micranthes pensylvanica (L.) Haw. var. forbesii (Vasey) Bush — Mo3; = Saxifraga forbesii Vasey — G, Burns (1942); < Micranthes pensylvanica (L.) Haw. — C, FNA8, K4; < Saxifraga pensylvanica L. — F. Basionym: Saxifraga forbesii Vasey 1870

Links to other floras: < Micranthes pensylvanica - FNA8

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Wetland Indicator Status:

  • Eastern Mountains and Piedmont: OBL (taxonomic split from wetland indicator species)
  • Great Plains: FACW (taxonomic split from wetland indicator species)
  • Midwest: OBL (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: OBL (taxonomic split from wetland indicator species)

Heliophily ⓘ: 1

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Horticultural Information

No horticultural data found for this taxon.