Definitions for "HARDHEADS"
Burrs causing particular difficulties in wool processing, specifically noogoora burr ( Xanthium occidentale) and Bathurst burr ( Xanthium spinosum).
Keywords:  weedy, wiry, perennial, tough, purple
a weedy perennial with tough wiry stems and purple flowers; native to Europe but widely naturalized
Keywords:  harmonium, another, name
Another name for the Harmonium.