horse gentian

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Related to Triosteum: horse gentian
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Synonyms for horse gentian

coarse weedy American perennial herb with large usually perfoliate leaves and purple or dull red flowers

References in periodicals archive ?
Floyd Gohmann & Weatherholt 100 Triosteum perfoliatum Caprifoliaceae Harrison H.
Among others, this list includes Agastache scrophulariaefolia, Aristolochia serpentaria, Carya laciniosa, Hamamelis virginiana, Hybanthus concolor, Ilex verticillata, Lobelia cardinalis, Huperzia lucidula, Lycopus virginicus, Triosteum aurantiacum, Triphora trianthophora, and Ulmus thomasii.
Species found only at Botany Glen and not at other documented studies from the region include Ophioglossum vulgatum, Heracleum lanatum, Triosteum perfoliatum, Trillium grandiflorum, Stylophorum diphyllum, Chelone oblique, and Viola palmata
subglabrata, Phytolacca americana, Senecio glabellus, Solanum nigrum, Solidago canadense, Triosteum aurantiacum, Verbascum blattaria (both the yellow and white flower phenotypes), Verbena hasata, and V.