|First Collector||J.A. Folkers|
Cross-section round. Outline wavy. Culm center hollow. No visual difference between epidermis cells and sclerenchyma cells. Continuous peripheral sclerenchymatic belt. Large vascular bundles in 2-3 rows. Small vascular bundles integrated in the sclerenchy
Outline wavy. Upper and lower epidermis cells of equal size and shape. 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.