silphium terebinthinaceum

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prarie dock

prarie dock

Yellow daisy-type flowers on tall leafless stem that can reach 10 ft (3m), taller than a person with HUGE heart/spade shaped thick, coarse, sandpapery leaves around base of plant. Top of young leaves shiny. Stalk can be green or reddish pink. Has smelly gummy sap that smells like turpentine and can be used as chewing gum to freshen breath and prevent nausea. Related to cup plant. Young leaves and shoots used in salads, roots used medicinally for fever, asthma, spleen, heart, liver, gallbladder, bile, cholesterol, antiseptic, stopping bleeding (astringent), ulcers, heavy menstrual periods, bruising, rheumatism.
References in periodicals archive ?
nigricans, Andropogon gerardii, and Silphium terebinthinaceum.
Common forbs included Aster laevis (smooth aster), Silphium terebinthinaceum (prairie dock), Solidago nemoralis (gray goldenrod), and Coreopsis tripteris (tall tickseed).
These three prairie grasses were followed in importance by four common prairie forbs of the Asteraceae: Aster laevis (smooth aster), Silphium terebinthinaceum (prairie dock), Solidago nemoralis (gray goldenrod), and Coreopsis tripteris (tall tickseed), all with IVs greater than 7.