BARTSIA, in botany, a genus of the didynamia angiospermia class. The calix has two coloured emarginated lobes; the corolla is less than the calix, and the superior lip is longest; the capsule has two cells. The species are 4, of which the viscosa, or marsh eye-bright cow-wheat, and the alpina, or mountain eye-bright cow-wheat, are natives of Britain.