Subgen. Psilantha (C. Koch) Tzvel. (Gramineae)
亚属2．断轴亚属——Subgen. Psilantha (C. Koch) Tzvel.
名称文献：Subgen. Psilantha (C. Koch) Tzvel. CCCP, 1:348. 1974: Tzvel. in Fed. Poac. URSS 635. 1976. ——Poa D. Psilantha C. Koch, Linnaea 21:405. 1848. ——Boriskellera Terekhov, Delect. Sem. Hort. Bot. Kujbyshev.: 13. 1938. ——Eragrostis sect. Psilantha (C. Koch) Tzvel. 50(11): 1634. 1965. ——Psilantha (C. Koch) Tzvel. l. c. 53 (3):311. 1965.
形态特征：小穗轴在小穗成熟后于诸小花之间逐节断落。多年生草本，常具短地下茎。
形态特征：模式种：戈壁画眉草 E. collina Trin．