| The leaflets are ovate to lanceolate, sometimes hastate, and are subtended by inconspicuous stipels. |
| Flowers are generally borne solitarily in leaf axils or in inflorescences subtended by bracts, but some taxa are ebractate. |
| The perimeters of the airway lumen and of the adventitia subtended two areas. |
| Presentation of stimuli subtended approximately four degrees of visual angle. |
| Trillium species are characterized by a single trimerous flower subtended by a whorl of three leaves. |
| Reticles are in the second focal plane, so as power is changed the angle subtended by the space between lines varies. |
