Cross-section triangular. Outline with rips. Culm center filled. Recognizable epidermis cells. Peripheral sclerenchymatic stabilisation structure (girders) rectangular. Large vascular bundles in one row. Vascular bundles integrated in peripheral stabilisa
Outline with rips. Upper epidermis cells in several rows. Vascular bundles centered between the upper and lower side of the leaf. Girders extending from the vascular bundle to both sides of the leaf.