Stave-acre

Thus, any weeds or rubbish of lesser bulk than the grain will go through the sieve ; and wild oats, shepherd's needles, stave-acre, with all other light weeds and sprouted grains, may be taken off the top of the corn in the sieve ;

Source: wiktionary

Th' infectious scab, arising from extremes Of want or surfeit, is by water cur'd Of lime, or sodden stave-acre, or oil Dispersive of Norwegian tar, renown'd By virtuous Berkeley.=

Source: wiktionary

Stonehenge recommends an ointment made of 2 oz. finely powdered stave-acre to lb. lard; it should be well rubbed in several times a day.

Source: wiktionary