Polygala al'ba, White, Texas or False Senega. -- West of Mississippi River; root 6 Mm. (1/4') thick, resembling official, but has a lighter color internally, also a cylindrical wood, and is destitute of keel; contains polygalic acid 3 p.c.; yields light-colored infusion and tincture. P. Boyki'nii, Southern States; like the P. alba, only thinner, yet some consider both to be one and the same species.