Rhabdotosperma saudiarabicum (Scrophulariaceae), a new species from Saudi Arabia

Abstract

A new species of Rhabdotosperma (Scrophulariaceae) is described from southwestern Saudi Arabia. For 75 years, the species was confused with R. bottae and Verbascum melhanense. The new species is illustrated with information on identification, distribution, specimens examined, habitat, conservation status, phenology, etymology, and taxonomic notes.