|Habitat||River gravel bed with Calamagrostis pseudophragmites|
Cross-section round. Outline wavy. Culm center hollow. Recognizable epidermis cells. Large vascular bundles in 2-3 rows. Solitary large vascular bundles. Sclerenchymatic sheath around vascular bundles with 1-3 cells. Chlorenchyma absent.
Outline with rips. Upper epidermis cells in one row. Vascular bundles centered between the upper and lower side of the leaf. Girders extending from the vascular bundle to the lower side of the leaf.