A New Species of Orinus (Poaceae) from Qinghai, China

Zhang Tong-lin ^[1] ; Cai Lian-bing ^[1]
1. [1] Northwest Institute of Plateau Biology
  
  Northwest Institute of Plateau Biology
  
  China
Localización: Novon: a journal for botanical nomenclature, ISSN 1055-3177, Vol. 18, Nº. 2, 2008, págs. 275-278
Idioma: inglés
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Resumen
- A new species of Orinus Hitchcock, O. alticulmus L. B. Cai & Tong Lin Zhang, is described and illustrated. This species is endemic to Qinghai province, China, occurring at altitudes of 2450�2600 m on sandy soils. It resembles O. kokonorica (K. S. Hao) Tzvelev, but differs from that species by its slightly effuse panicles, longer spikelets usually with five or six florets, purple-yellow anthers, shorter caryopses, and the paleas usually longer than the lemmas. A key to the five species of the genus is provided.