This section is from the "A Manual of Materia Medica and Pharmacology" book, by David M. R. Culbreth. Also available from Amazon: Manual of Materia Medica and Pharmacology.
Polygona'tum (Convallaria) multiflo'rum, European Solomon's Seal, and P. commuta'tum (gigante'um), American Solomon's Seal. -- Rhizome similar and contains convallarin, asparagin, mucilage, starch.
 
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