rhizotaxy
/ˌriːzoʊtæksɪ/ (REE-zoh-TAK-sih)
Definitions
1. noun
the arrangement or branching of roots in plants, especially in relation to the soil
“The horticulturist studied the rhizotaxy of the newly planted trees to optimize their root growth.”
2. noun
a type of branching in the roots of plants, typically with a network of fine roots
“The unique rhizotaxy of the fern allowed it to thrive in areas with poor soil quality.”