Gentiana villosa L.
Engl.: Sampson's snakeroot, striped gentian, American gentian, marsh gentian, straw-colored gentian, yellowish-white gentian.
Bot. syn.: Gentiana heterophylla Raf., Gentiana ochroleuca Froel., Gentiana serpentaria Raf.

The Medical Flora of Kansas: Dioscorea - Gymnocladus.

Botanical name: 
Eupatorium perfoliatum
Eupatorium purpureum
Grindelia squarrosa
Dioscorea villosa
Erechtites hieraciifolius
Galium aparine
Agalinis
Ageratina altissima
Ageratina aromatica
Conyza canadensis
Diospyros virginiana
Equisetum hyemale
Eryngium yuccifolium
Euonymus atropurpureus
Fraxinus americana
Gentiana alba
Gentiana catesbaei
Gentiana saponaria
Gentiana villosa
Geranium maculatum
Geum canadense
Geum virginianum
Gymnocladus dioicus
Gillenia stipulata

Classic texts: Journals: TNEMA 1882-1883.

Some Native Southern Remedies.

Botanical name: 
Eupatorium perfoliatum
Solidago odora
Galium aparine
Ageratina aromatica
Alternanthera polygonoides
Calycanthus floridus
Eupatorium foeniculaceum
Eupatorium rotundifolium
Galium pilosum
Gamochaeta purpurea
Gelsemium sempervirens
Gentiana villosa
Gnaphalium obtusifolium
Helenium flexuosum
Pityopsis graminifolia
Pterocaulon virgatum
Sarracenia flava
Sarracenia minor
Sericocarpus tortifolius
Strophostyles helvula

Classic texts: Journals: AJP 1885.