⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50113904, with some changes.

Stipa pennata subsp. tirsa (Steven) Kneuck. is a synonym of Stipa tirsa Steven

This name is a synonym of Stipa tirsa Steven.

The record derives from Tropicos which reports it as a synonym (record 50113904) with original publication details: Allg. Bot. Z. Syst. 8: 182 182 1902.