Spike rachis usually tough and not disarticulating. Glumes obscurely keeled proximally, indistinctly so distally; keel prolonged at apex into shortish tooth; tooth apex subobtuse, acute, or tapering into short awn. Fl. and fr. Jun–Aug. 2n = 42*.
'Flora of China @ eFloras (2008). Published on the Internet http://www.efloras.org/flora_page.aspx?flora_id=2 [accessed August 2016]' Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.