⚠ Version 1 of The Plant List has been superseded.
This name is in version 1.1 of The Plant List, record tro-100360414, with some changes.
This name is a synonym of Mostacillastrum sagittatum (Hook. & Arn.) Al-Shehbaz.
The record derives from Tropicos which reports it as a synonym (record 100360414) with original publication details: Rep. Princeton Univ. Exp. Patagonia, Botany 5: 450. 450. 1905.