Pimpernel

Common Pimpernel has diverse weak square stalks lying on the ground, beset all along with two small and almost round leaves at every joint [...].

Pimpernel (poor man's weather glass) was also a protection, but as the gatherer collected the herbs, he must chant a certain incantation and continue to do so twice a day for 15 days[.]

Lined up solidly with the Pimpernels and with the persecuted.