| Tufted; several or many stems in a close tuft. |
| The indurate downward extension of the mature lemma in Stipa, Aristida, and some other genera. |
| In a globular cluster or head. |
| A longitudinal depression in the sides of the pedicels of Bothriochloa. |
| Fringed with hairs on the margin. |
| A protective sheath for the young shoot in the embryo. |
| The sheath of the monocotyledonous embryo that protects the primary root or radicle. |
| The area on the outer (abaxial) side of a leaf at the junction of the sheath and blade. |
| The lower, undivided part of the awns of certain Aristida species. |
| Flattened strongly, typically laterally; keeled. |
| Dished inward, an existing hollow. |
| Narrow or dense inflorescences, the branches being appressed or short. |
| Rounded on the surface. |
| The heart-shaped base and pointed apex of a structure e.g. a leaf blade. |
| Undulating in a horizontal plane. |
| Shaped like a tube, round in cross section with parallel margins. |