What is "orinus"

Orinus is a genus of Asian plants in the grass family .

1. Orinus alticulmus L.B.Cai & Tong L.Zhang - Qinghai
2. Orinus anomala Keng f. - Qinghai, Sichuan
3. Orinus kokonorica (K.S.Hao) Keng - Gansu, Qinghai
4. Orinus longiglumis X.Su & L.B.Cai - Tibet
5. Orinus thoroldii (Stapf ex Hemsl.) Bor - Qinghai, Xinjiang, Tibet, Kashmir, Nepal, Uttarakhand, Kazakhstan, Kyrgyzstan, Uttar Pradesh
6. Orinus tibeticus N.X.Zhao - Tibet