A new typification of Hieracium umbellatum (Asteraceae)

The Linnaean name Hieracium umbellatum has generally been understood in a very strict and clear sense. The original material comprises three specimens and a few illustrations, with a lectotype designated here in Burser's Hortus siccus (UPS). The earlier choice published by W. Lack was made from non-original material and was therefore not effective. The application of this name is confined to a variety generally known as H. umbellatum var. commune Fr. nom. illeg. (restricted here to the forms with almost entire, sublinear leaves), most proximate to H. umbellatum var. coronopifolium (Bernh. ex Hornem.) Wimm. et Grab.