Arundinella nepalensisGrass Species / By Rajaji NP Arundinella nepalensis (Tut nal) Arundinella nepalensis is an evergreen, clump-forming grass with short, scaly rhizomes; it produces slender to stout, erect culms usually 90 – 200 cm tall, occasionally to 300cm. The plant is harvested from the wild for local use as a thatch.