RUBIACEAE. 



343 



PINCKNEYA. Georgia Bark. 

 (Family Rubiaceae). 



Shrubs, or somewhat arbores- 

 cent: deciduous. Twigs rather 

 stout, terete: pith round, very 

 white, continuous. Buds solitary, 

 sessile, ovoid and small or the ter- 

 minal irregularly conical and en- 

 larged, with 1 or 2 pairs of ex- 

 posed scales. Leaf-scars opposite, 

 crescent-shaped to angularly is- 

 odiametric, at first much raised: 

 bundle-trace 1, crescent- or C- 

 shaped, compound: stipular scars 

 or membrane connecting the leaf- 

 scars. 



A century ago Pinckneya pu- 

 bens possessed considerable repute 

 in the South as a specific for ma- 

 larial fevers. The common name 

 Georgia bark comes from this use 

 of the bitter bark. The genus is 

 related to Cinchona, the source 



of quinine, and it was thought at one time that Peruvian or 

 cinchora bark might find a rival in Georgia or pinckneya bark. 

 Twigs from villous glabrescent. P. pubens. 



