monostichous
/məˈnɒstɪkəs/ /ˌmɒnə(ʊ)ˈstʌɪkəs/adjective
1 Biology. Arranged in a single vertical row, rank, or series on one side of an axis, as the flowers of certain grasses. Compare earlier distichous.
2Of the teeth of certain amphibians: arranged in a single row.
Origin
Mid 19th century (in an earlier sense). From ancient Greek μονο- mono- + στίχος row, line + -ous; compare -stichous.