Each leaf has a large stipule which forms a wide, membranous ochrea. The leaves have sheathing stipules known as ochrea. They have a membranous ochrea (a sheath around the stem nodes). The brownish ochrea at the base is up to . Each leaf has a peculiar pair of fused, sheathing stipules known as an ochrea. "ochrea", also found elsewhere as an exception among. The leaves have large stipules which form reddish ochrea up to long. The leaves have membranous stipules which fuse to form silvery ochrea at the leaf bases. The brownish or reddish ochrea may be leathery to papery. There are ochrea up to 12 centimeters in length.