|Habitat||ad marginem viae|
Cross-section round. Outline smooth. Culm center hollow. Recognizable epidermis cells. Continuous peripheral sclerenchymatic belt. Large vascular bundles in one row. Solitary large vascular bundles. Sclerenchymatic sheath around vascular bundles not ligni
Outline wavy. Upper and lower epidermis cells of equal size and shape. Upper epidermis cells in one row. Epdermis lignified. Vascular bundles near the upper side of the leaf. Girders extending from the vascular bundle to the lower side of the leaf.