The identity of Pennisetum longistylum ( Poaceae).

Thulin M. & Phillips S.: The identity of Pennisetum longistylum (Poaceae). - Willdenowia 45: 173-175. 2015. - Version of record first published online on 06 July 2015 ahead of inclusion in August 2015 issue; ISSN 1868-6397; © 2015 BGBM Berlin. DOI: Pennisetum longistylum, recently stated to be an older name for the well-known P. clandestinum ( Cenchrus clandestinus), is shown to be a hybrid between P. clandestinum and P. villosum ( C. longisetus). This is a rare hybrid only known from a few gatherings from the highlands of Ethiopia and Eritrea, the most recent one made in 1916. The new combination Cenchrus × longistylus is proposed, and the names P. clandestinum and P. villosum are lectotypified. [ABSTRACT FROM AUTHOR]