Cross-section round. Outline smooth. Culm center hollow. No visual difference between epidermis cells and sclerenchyma cells. Continuous peripheral sclerenchymatic belt. Large vascular bundles in one row. Small vascular bundles integrated in the sclerench
Outline smooth. Upper epidermis cells in one row. Girders extending from the vascular bundle to the upper side of the leaf. Girders extending from the vascular bundle to both sides of the leaf.