Cross-section round. Outline smooth. Culm center hollow. Recognizable epidermis cells. Endodermis present. Continuous peripheral sclerenchymatic belt. Large vascular bundles in one row. Small vascular bundles integrated in the sclerenchymatic belt. Solita
Outline wavy. Upper and lower epidermis cells of equal size and shape. Upper epidermis cells in one row. Vascular bundles near the lower side of the leaf. Girders extending from the vascular bundle to the lower side of the leaf.