The picture to your remaining suggests regular means nodules, these off bur clover (Medicago)
The picture to your remaining suggests regular means nodules, these off bur clover (Medicago) In a symbiotic relationship with the soil bacteria known as ‘rhizobia’, legumes form nodules on their roots (or stems, see figure below) to ‘fix’ nitrogen into a form usable by plants (and animals). The process of biological nitrogen fixation was discovered …