IPA: /pəˈlɪstɪkəs/
KK: /pɑˈlɪstɪkəs/
Arranged in multiple rows or series, often used to describe the arrangement of leaves or other plant structures.
The fern has a polystichous arrangement, with its leaves growing in several rows.
Polystichous → It is formed from "poly-" (meaning many) and "stichos" (from Greek, meaning row or line). The word describes a plant or leaf arrangement that has many rows or lines of leaves.
Think of 'many' ('poly-') rows or lines ('stichos') when you picture polystichous, which refers to a plant with multiple rows of leaves.