sheath lobes, Scheidenlappen (Weberling, 1967, 1975). Sheath
lobes are paired appendages of the sheath just below the
junction with the hyperphyll, also found on foliage
leaves. Since the cotyledonary hyperphyll is unifacial, the
sheath lobes are often united across the base of the hyperphyll
and form a single median sheath lobe