Cross-section round. Outline smooth. Culm center hollow. Recognizable epidermis cells. Continuous peripheral sclerenchymatic belt. Large vascular bundles in one row. Small vascular bundles integrated in the sclerenchymatic belt. Sclerenchymatic sheath aro
Outline with rips. Upper epidermis cells in one row. Epdermis lignified. Vascular bundles centered between the upper and lower side of the leaf. Girders extending from the vascular bundle to the lower side of the leaf.