| There is also a genus of carnivorous habits, called the Sphargis, or coriaceous turtle. |
| The first glume is rigidly coriaceous, gradually narrowed from a villous base to an erect scabrid awn, 1-nerved. |
| In structure they are coriaceous, and include plants both with broad and narrow, branched and unbranched fronds. |
| The fourth glume is membranous when young, but later on it becomes thick, coriaceous and rugose at the surface. |
| Evergreen leaves are usually coriaceous, while deciduous leaves are usually membranaceous or chartaceous. |
| The coriaceous part of the hemelytra is of a purple tint, but the membranous part is brown. |
