A survey of the wild medicinal plants of the United States: their distribution and abundance
National research council - Science - 138 pages
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Abundant Abundant Abundant abundant Fairly abundant abundant Locally abundant Abundant Moderately abundant abundant Not abundant abundant Occasional Abundant abundant Occasional Occasional Abundant Scarce Alleghany americana Aralia racemosa Arctium Arisaema triphyllum Asarum canadense Baptisia tinctoria Columbia Cornus florida counties included Culver's Culver's Lake region Cypripedium pubescens Datura stramonium deep leaf mold ell shaded Fairly abundant Abundant fence rows Fields and waste Garrett Gaultheria procumbens glabra Gray heavy leaf mold Hich high altitude Abundant hillsides Iloderately leaf mold Abundant lenta Lobelia inflata Michx Moderately abundant Occasional moist soil Moist woodlands mountain side Abundant mountain streams Abundant mountains in rich numbers Nutt Occasional Abundant Moderately occurs abundantly Open woodland Oregon peltatum perfoliatum Pursh rich leaf mold rich loam rich soil Rich woodlands roadsides Salisb Sambucus canadensis Sandy soil Scarce Scarce Sevier slopes in rich Sourland Mountains Sparta survey swamps Abundant thalictroides thickets throughout county Veratrum viride Vernon virginiana W.W.Eggleston and J.W.Kelly woodland Abundant