(216) 



4865. Cypripedium. Lady's slipper. American valerian. — The rootstock and 



roots of Cypripedium hirsutum Mill. (Orchidaceae — Orchid Family). 

 Native of eastern North America. A commercial sample, presented by 

 Peek and Velsor, of New York. 



4866. False lady's slipper. — The rootstock and roots of Fissipes acaulis Ait. 



Native of northeastern North America. Collected by H. H. Rusby at 

 Marlboro, New Hampshire, July 20, 1919. 



4867. Salep. Adam and Eve. Orchis. — The tubers of Orchis mascula L. (Orchi- 



daceae — Orchid Family). Native of Europe. Presented by Merck & 

 Company, of New York. 



4868. Kava. Ava. Methysticum. (See No. 2393.) Native of the South Sea 



Islands and cultivated as the source of an intoxicating beverage. Presented 

 by Parke, Davis & Company. 



4869. Another sample of the same, comprising both rootstock and roots. Same 



donor. 



4870. Muira-Puama. — The roots of Dulacia ovata (Miers) Lyons (Olacaceae — 



Olax Family). Native of tropical America. From the New York drug 

 market. Presented by H. H. Rusby. 



4871. The stems of the preceding species. Presented by Merck & Company. 



4872. Canada snakeroot. Wild ginger. — The rootstock and roots of Asarum 



canadense L. (Aristolochiaceae — Snakeroot Family). Native of eastern 

 North America. Collected by A. A. Tyler at Easton, Pennsylvania, 1898. 



4873. Another sample of the same, being the rootstock and roots of A. refiexum 



Bicknell. Collected by Percy Wilson in Bedford Park, New York, June, 

 1899. 



4874. Heart-leaved snakeroot. — The rootstock and roots of Hexastylus arifolia 



(Michx.) Small. (Same family.) Native of the southeastern United 

 States. Collected by H. H. Rusby at Somerville, South Carolina, March 

 22, 1909. 



4875. Serpentaria. Snakeroot. Virginia snakeroot. — The rootstock and roots of 



Aristolochia Serpentaria L. (Same family). Native of the eastern 

 United States. Presented by Parke, Davis & Company, of New York. 



4876. Pure powdered Virginia snakeroot, or Serpentaria. — The preceding, in the 



powdered state. Presented by H. H. Rusby. 



4877. The same, containing much sand and earthy matter. Same donor. 



4878. Red river, or Texas, snakeroot. — The rootstock and roots of A. reticulata 



Nutt. Native of Texas and the adjacent region. Same donor. 



4879. Colombian snakeroot. — The root of a species of Aristolochia. Native of 



the Republic of Colombia. Presented by H. H. Rusby. 



THE KNOTWEED FAMILY (Polygonaceae) 



4880. Bistort. Bistorta. — The rootstock of Polygonum Bistorta L. Native of 



Europe and western Asia. Presented by Peek and Velsor, of New York. 



4881. Rheum. Rhubarb. — The rootstock and larger roots of Rheum officinale 



Baill. Deprived of its outer bark and carefully dried in the sunshine. 

 Native of China and cultivated. Presented by the New York College of 

 Pharmacy. 



4882. Another sample of the same. Presented by Merck & Company. 



