Cross-section triangular. Outline with rips. Culm center filled. Recognizable epidermis cells. Peripheral sclerenchymatic stabilisation structure (girders) rectangular. Large vascular bundles in 2-3 rows. Vascular bundles integrated in peripheral stabili
Outline wavy. Upper and lower epidermis cells of equal size and shape. Upper epidermis cells in several rows. Vascular bundles near the lower side of the leaf. Large cavities.