rhizomatic
/ˌrʌɪzə(ʊ)ˈmatɪk/adjective
1 Botany = rhizomatous.
2 Figurative (originally Philosophy ). Resembling an interconnected, subterranean network of roots. Hence: non-hierarchical, interconnected.
Origin
Mid 19th century; earliest use found in Gardener's Monthly. From scientific Latin rhizomat-, rhizoma rhizoma + -ic.