Triosteum aurantiacum E.P. Bicknell var. illinoense (Wiegand) E.J. Palmer & Steyermark. Common name: Illinois Horse-gentian. Phenology: May-Jul; Aug-Oct. Habitat: Woodlands and forests in circumneutral soils, particularly those over mafic or calcareous rocks. Distribution: PA west to w. IA and se. NE, south to WV, c. KY, AR, and e. OK.
Origin/Endemic status: Native
Synonymy ⓘ: = Ar, C, F, K4, Mo2; = Triosteum illinoense (Wiegand) Rydb. — Il; = Triosteum perfoliatum L. var. illinoense Wiegand — G; < Triosteum aurantiacum E.P.Bicknell — Mi, Pa, Backlund et al. (2002); < Triosteum perfoliatum L. var. aurantiacum (E.P.Bicknell) Wiegand — GrPl. Basionym: Triosteum perfoliatum L. var. illinoense Wiegand 1923
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Heliophily ⓘ: 6
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Horticultural Information
No horticultural data found for this taxon.