Distichous

Part of speech: adjective

Definitions

1. Arranged in two opposite vertical rows, as with the leaves or flowers of certain plants growing along a stem
2. Describing an arrangement of parts set in two rows on opposite sides of an axis, such as leaves on a branch
3. Growing or set out in two ranks facing each other, a pattern often seen in the leaves of grasses and some other plants

Etymology: "Distichous" is a botanical adjective built from "distich," itself borrowed into English from Latin "distichum," which came from Greek "distikhon," meaning a couplet of two lines of verse. The Greek prefix "di-" means "two" and "stikhos" means "row" or "line," so the core idea is simply two rows. The English suffix "-ous" turns the noun into an adjective meaning "having" or "characterized by" that feature. The botanical sense transfers the poet's pairing of lines to plant structures. When leaves or florets sit along a stem in two opposite ranks, they form a distich arrangement, and a plant showing this pattern is described as distichous. Grasses are the classic example, with their flat leaves alternating on opposite sides of the stalk, giving a neat two-ranked fan when viewed from above.

Synonyms: distichal, two-ranked