Portuguese
viperina A coarse prickly European weed with spikes of blue flowers; naturalized in United States.
1
This holds good with Euonymus, Rhamnus catharticus, Ilex, Fragaria, all or at least most of the before-named Labiatae, Scabiosa atro-purpurea, and Echium vulgare.
2
Echium vulgare, a humbug, merely a case like Thymus.