82 



POLYGALE^. 



Kr. grandifol 



or Neiv Grcmada Rhatany. The plant yielding it is 

 lentosa St. Hil. (Kr. Ixina var. /3 grcmatensis Triana, 

 ^-.. y.^„^^.jyyv^a Berg), a sbrub 4 to 6 feet high covenng large arid 

 tracts in the valley of Jiron between Pamplona and the Magdalena in 

 New Granada, in which locality the collection of the root was observed 

 by Weir in 1864/ According to Triana it also grows at Socorro, soutli 

 of Jiron. The same plant is found near Santa Marta and Rio Hacha 

 in north-eastern New Granada, in British Guiana, and in the Brazilian 

 provinces of Pernambuco and Goyaz. 



stem 



knotty 



a- lie oucui 111 luuij-ciuvvxi VL oavauiua riiaiaiiy jh iievci ck-- ^x*-- ^ 



and irregular as that of the Peruvian drug, nor are the roots so long or 

 "" ■-1---1 Separate pieces of root of sinuous form, 4 to 6 inches Ion" 



so thick ^ „_ „ „„,^ 



and ^\ to T^ of an inch thick are most frequent. The drug is moreover 

 well distinguished by its dull purplish brown colour, its thick smooth 

 bark marked with longitudinal furrows, and here and there with deep 

 transverse cracks, and by the bark not easily splitting off as it does in 



common 



The anatomical difference depends chiefly upon the more abundant 

 development of the bark which in thickness is J to ^ the diameter ol 



the wood. In Pfirnvinn rl-infon^r flic /ir.i4i\>Ql Iq^tov' offnins onlv i tO 4 01 



the diameter ot the woody column. The greater hrmness oi '- 

 suberous coat in Savanilla rhatany is due to its cells being densely nm 



with colouring matter. 



Th 



Savanilla rhatany differs from the Peruvian root in its tannic matter, 

 is becomes evident by shaking the powdered root (or bark) with wate 



and iron reduced by hydrogen. The liquid filtered from the Savandla 

 sort and diluted with distilled water exhibits an intense violet colour, 

 that from Peruvian rhatany a dingy brown; the latter turns ^^S^^^^ 

 by alkalis. Thin sections of the Peruvian root assume a greyislj nu 

 when moistened with a ferrous salt; Savanilla root by a similar "'eaj^ 

 ment displays the above violet colour. The Savanilla root is richer i^ 

 soluble matter and from the greater development of its bark may dese^^'' 

 to be preferred for medicinal use. 



In the English market, Savanilla root is of less frequent occurrence 

 than that of Para. 



A kind of rhatany attributed to Krameria secundiflora D^-, J 

 herbaceous plant of Mexico, Texas and Arkansas, was furnished to i^ei, 

 in 18o4, but has not been in commerce. Its anatomical structure n 

 been described by Berg.^ 



Hanbury, Origin of Savanilla Rhatanv, 

 m Iharm. Journ. vi. (1S65) 460.— Also 

 Science Papers, 333.— In that paper I re- 



Z^'t ^^^^"^^ *° ^ variety of Kr. Ixina 

 which M. Cotton has shown to diflfer in no 

 respect from St. Hilaire'a Kr. tomentom 



a conclusion in which, a^ ^er carefuUj^^ 

 aminatiou of specimens, I luUy o 



Fig. of Kr. Ixina in Bentley and Tnnie 



Med. PL part 10. ^^ r-cr, 



2 Bot. Zeitunrj, 14th Nov. lSo6. -y' 



