| Gums black with pronounced transverse membraneous ridges. |
| The picture shows the brown remains of a membraneous sheath at the base of the leaf. |
| At birth, however, the interatrial foramen is closed by a membraneous flap, and oxygen-depleted blood from the body enters the right atrium, is channelled into the right ventricle, and thence to the lungs for oxygenating. |
| Each flower, surrounded by a thin membraneous sheath, topped a short pedicel that elongated during the last stages of flower development up to anthesis. |
| I seemed to see the membraneous and cylindrical tubes tremble beneath the undulation of the waters. |
| A bulb consists of a relatively large, usually globe-shaped, underground bud with membraneous or fleshy overlapping leaves arising from a short stem. |
