|First Collector||S.D. Russell|
|Habitat||Flagstaff, Northern Arizona University|
Cross-section round. Outline wavy. Culm center hollow. Recognizable epidermis cells. Continuous peripheral sclerenchymatic belt. Peripheral sclerenchymatic stabilisation structure (girders) conic. Large vascular bundles in one row. Vascular bundles integr
Outline smooth. 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 both sides of the leaf.