root nodule indeterminate root nodule ORCID:0000-0002-4366-3088 ENVO ENVO:01000168 Indeterminate nodules are found on temperate legumes like Pisum (pea), Medicago (alfalfa), Trifolium (clover), and Vicia (vetch). They earned the moniker "indeterminate" because they maintain an active apical meristem that produces new cells for growth over the life of the nodule. Because they are actively growing, indeterminate nodules manifest zones which demarcate different stages of development/symbiosis. 2010-03-20T09:34:55Z