|First Collector||J.M. Rominger|
Cross-section round. Outline smooth. Culm center hollow. Epidermis with hairs. Continuous peripheral sclerenchymatic belt. Peripheral sclerenchymatic stabilisation structure (girders) rectangular. Large vascular bundles in one row. Solitary large vascular
Outline with rips. Upper epidermis cells in one row. Epdermis lignified. Epidermis with hairs. Vascular bundles centered between the upper and lower side of the leaf. Vascular bundles surrounded by cells with atypical shape.