exannulate

== English == === Etymology === From ex- +‎ annulate. === Adjective === exannulate (not comparable) (botany) Having the sporangium destitute of a ring or annulus. Destitute of a ring. === References === “exannulate”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.