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*Hyoscyamus niger Linn. Henbane, leaves and inflorescence. 

 Juniperus communis Linn. Juniper berries, fruit. 

 Lactuca Canadensis Linn. Wild lettuce, leaves and inflorescence. 

 . Lobelia inflata Linn. Lobelia, herb and seed. 



Menispermum Canadensis Linn. Yellow parilla. rhizome and roots. 



Mentha piperita Linn. Peppermint, leaves and inflorescence. 



Monarda flstulosa Linn. Wild bergamot, leaves and inflorescence. 



Phytolacca decandra Linn. Poke root and berries. 



Podophyllum peltatum Linn. Mandrake, rhizome and roots. 



Prunus serotina Ehrh. Cherry, bark. 



Quercus alba Linn. White oak, bark. 



*Ricinus communis Linn. Castor bean, seed and leaves. 



Rubus villosus Aiton R. Canadensis, Linn, and R. trivalis, Michx. 



Blackberry, root bark. 

 * Salvia officinalis Linn. Sage, herb. 

 Sanguinaria Canadensis Linn. Blood root, rhizome. 

 Sassafras variifolium (Salisbury) O. Kuntze. Sassafras bark, root, 



bark. 

 Satureja hortensis Linn. Summer savory, herb. 

 Taraxacum officinale Weber. Dandelion, root. 

 Thuja occidentalis Linn. Arbor vitae, leaves. 

 Thymus vulgaris Linn. Thyme. 

 Tsuga Canadensis (Linn.) Carr. Hemlock, bark. 

 Ustilago Maydis Leveille. Ustilago, entire fungous plant. 

 ^Valeriana officinalis Linn. Valerian, rhizome and rootlets. 

 *Veratrum album Linn. White hellebore, rhizome and rootlets. 

 Veratrum viride Aiton. Veratrum, rhizome and rootlets. 



Chemical constitutents but partially determined; physiological action 

 fairly well known: 



*Cactus grandiflorus Linn. Cactus grandiflorus, branches. 



Cannabis sativa Linn. var. Americana. American hemp, inflorescence. 



Spigelia Marylandlca Linn. Pink root, rhizome and rootlets. 



Chemical constituents regarded as well known; physiological action 

 not systematically investigated or well understood: 



Acorus Calamus Linn. Calamus, rhizome. 



yEsculus Hippocastanum Linn. Horse chestnut, bark and seed. 



