semiannular
adjEtymology From semi- + annular.
1
Having a shape resembling part of a ring or incomplete circular band.
- The capsule in both families is spherical, with a bistratose wall; the outer cell layer usually bears nodular thickenings[…]; the inner layer (of nearly equally large cells) lacks the regular semiannular or annular thickenings of most other leafy liverworts[…]1992, Rudolf M[athias] Schuster, The Hepaticae and Anthocerotae of North America: East of the Hundredth Meridian, volume V, Chicago, Ill.: Field Museum of Natural History, →ISBN, page 6:
- Related terms
- annular